Abstract: A mobile device for setting a signal strength value for the mobile device to receive needed radio signals. The mobile device includes a signal strength value configuring system and a radio signal receiving unit. The signal strength value configuring system is operable to set the signal strength value for the mobile device to receive needed radio signals, utilizing a number of radio station channels detected by the radio signal receiving unit of the mobile device.

Abstract: An asynchronous receiver system has multiple antennae and an asynchronous receiver circuit with a signal input. The asynchronous receiver circuit receives a wireless signal at the signal input and generates a first quality signal responsive to the received wireless signal. A switch selects one of the antennae for coupling to the input of the asynchronous receiver circuit responsive to a control signal. A controller receives the first quality signal and generates the switching control signal. The controller sequentially selects each one of the antennae, measures the first quality signal and starts a timer with a time value for the selected antenna. The controller selects a next one of the antennae if the measured first quality signal value is below a threshold value and the timer expires and receives a remainder of a data packet based on the measured first signal quality values for the plurality of antennae.

Abstract: A receiver includes a plurality of RF receiver modules, a plurality of analog baseband sections, a plurality of analog to digital conversion sections, and a digital baseband processing module. The RF receiver modules convert inbound RF signals into a plurality of inbound analog signals. When the receiver is in a first mode, one of the plurality of analog baseband sections is active to adjust one of the plurality of inbound analog signals to produce an adjusted inbound analog signal; one of the plurality of analog to digital conversion sections converts the adjusted inbound analog signal into an inbound digital signal; and a portion of the digital baseband processing module is active to convert the inbound digital signal into inbound data.

Abstract: Apparatus, and an associated method, for a receiving station, such as the receive part of a mobile station, that has diversity antennas. The receiving station includes both legacy demodulators and a diversity demodulator. Calculations are made to determine signal indicia associated with the signal energy detected at the diversity antennas. Responsive to the signal indicia, selection is made as to whether to utilize demodulation data, demodulated pursuant to a diversity demodulation technique or pursuant to a legacy demodulation technique. As the characteristics of received signals change, reselection of the demodulation is correspondingly made, such as on a frame-by-frame basis of frame-formatted data.

Abstract: Reception signals received by first to fourth antennas 11 to 14 are sequentially selected one by one repeatedly in accordance with first to fourth switches 31 to 34 being controlled by first to fourth switch control circuits 41 to 44, respectively, so as to be inputted to a signal shaping section 60. The reception signals having been shaped by the signal shaping section 60 are sampled by a sample-and-hold section 71 and AD-converted by an AD converter 72 in accordance with a time at which the reception signals are sequentially selected. The resultant signals are converted into parallel signals by a serial-parallel conversion section 73. Thus, the parallel signals are obtained as the reception signals of the first to the fourth antennas 11 to 14.

Abstract: A distributed control and/or monitoring system and method includes a local application and a remote application separated from the local application. The local application includes a host computer. The remote application includes a plurality of field devices and a communication bus connected to the plurality of field devices. Packet messages are wirelessly communicated between the local application and the remote application such that the host computer and field devices can communicate with each other as if they were directly connected to the same communication bus.

Abstract: Systems and methods for transmitting multimedia data are disclosed which, in some embodiments, may comprise polling a first wireless device to obtain at least a first statistics of consumption of content previously transmitted to the first wireless device and polling a second wireless device to obtain at least a second statistics of consumption of content previously transmitted to the second wireless device. The method also comprises determining the resources available to transmit a first content and a second content to the first and second wireless device, wherein the first content to be transmitted to the first wireless device is selected based on the first statistics of consumption, and wherein the second content to be transmitted to the second wireless device is selected based on the second statistics of consumption.

Abstract: MIMO receiver with a reconfigurable pooled digital filter is disclosed. A processor sets parameters of the filter to minimize the number of instructions per second and the amount of power required by the filter to perform, while matching the filter to a transmitter filter. The processor uses an algorithm or a lookup table stored in memory to select the combination of filter parameters. The parameters may be selected from at least one of: a number of taps, a filter length, a word length, a coefficient quantization, a sampling rate, bits per sample, a sampling bit, a tap delay and a coefficient length. After selecting a combination of filter parameters, the processor sends a control signal to the adaptive filter. The pooled adaptive filter reconfigures itself in accordance with the selected filter parameters.

Abstract: A front end receiver is disclosed. The front end receiver comprises a plurality of transmissive signal paths originating from one signal input, a plurality of switching mechanisms; and at least one path of the plurality of transmissive signal paths including a first amplifier coupled to a first input port of each of the plurality of switching mechanisms. The front end receiver also comprises at least another path of the plurality of transmissive signal paths including a second amplifier coupled to a second input port of each of the plurality of switching mechanisms. The receiving subsystem coupled to the output port of each switching mechanism. Each of the receiving subsystems controls a switching mechanism to select the path that is optimal for radio reception depending on the strength of signal being received.

Abstract: A method and apparatus for correcting direct current (DC) offset errors of a received signal in a direct conversion receiver (DCR) are provided. DC offset correction algorithms are incorporated into the DCR, each algorithm being optimized for a particular receive signal operating environment. The DC offset correction algorithms remove DC offset errors in baseband In-phase and Quadrature-phase signals received within the direct conversion receiver baseband signal path. Individual DC offset correction algorithms are selected for use as determined by a signal quality estimator component. A DC offset correction component of the direct conversion receiver determines an appropriate DC offset correction algorithm suited for a particular operating environment. A criterion for a signal quality estimate is set to control transitioning between DCOC algorithms.

Abstract: A wireless network device includes a plurality of antennas for transmitting and receiving data packets. An antenna diversity module measures at least one of an average signal-to-noise ratio and a packet error rate associated with the data packets and selects a given antenna of the plurality of antennas based on at least one of the average signal-to-noise ratio and the packet error rate. The antenna diversity module measures a first average signal-to-noise ratio or a first packet error rate while utilizing a first antenna of the plurality of antennas, measures a second average signal-to-noise ratio or a second packet error rate while utilizing a second antenna of the plurality of antennas, and selects the given antenna based at least in part on a comparison of the first average signal-to-noise ratio to the second average signal-to-noise ratio or a comparison of the first packet error rate to the second packet error rate.

Abstract: Methods and systems are provided for providing machine health information. In one embodiment, a machine may include a storage device that is configured to store collected machine health data. The storage device has a module that is configured to determine a data characteristic and a communication characteristic. The storage device is further configured to determine, based on the data characteristic and the communication characteristic, whether to transmit a set of machine health data to an off-board system. Further, the storage device is coupled to a transmitter that is configured to transmit the set of machine health data to the off-board system.

Abstract: Provided is a method of selecting an algorithm in a wireless receiver which supports a plurality of algorithms, more particularly, a method of selecting a suitable algorithm which is adaptive to changes in channel environment and satisfies requirements of applications, using information which is available in the wireless receiver. The algorithm selection method includes: calculating a measure value for selecting an algorithm on the basis of information obtained from the wireless receiver; comparing the measure value with at least one threshold value, and selecting an algorithm that is to be applied to a received packet, from among the plurality of algorithms, according to the result of the comparison; and decoding the received packet using the selected algorithm, wherein the at least one threshold value is adaptively updated on the basis of the information obtained from the wireless receiver.

Abstract: A diversity receiver is provided with antennas (1a) and (1b) in a first branch and antennas (1c) and (1d) in a second branch each of which antenna gains is controlled so that the offset between the directions of directional radiation patterns for the first and second branches becomes approximately ?/2. Thereby, the diversity receiver can obtain a sufficient diversity gain even when it is incorporated into an indoor television with the antennas being built thereinto in close vicinity to one another.

Abstract: System for dual diversity receiver using switched LNAs. A dual diversity receiver is provided that includes two antennas to receive a radio signal, where each antenna produces an antenna signal that is representative of the received radio signal. The receiver includes first and second LNAs that receive the respective antenna signals and output first and second amplified signals. The receiver also includes logic to determine the stronger antenna signal and select one of the LNA outputs for processing by the receiver.

Abstract: Methods and systems for determining transmission channels for short range transmissions are disclosed. A transmitter provides short range transmission to a broadcast receiver configured to receive and tune channels within a signal spectrum. Channels within the broadcast signal spectrum are scanned, and an indication of received signal strength is obtained for each channel. The received signal strength indication (RSSI) can then be compared to a threshold power level that correlates to a signal level that the transmitter will be capable of overpowering based upon the transmission power of the transmitter. The scan results in an indication of one or more channels that have received signal strengths below the threshold power level of the transmitter.

Abstract: A number of RF receivers are connected in a network. The network is used to transmit communications, data, or both to and from the RF receivers and to synchronize the RF receivers to a common time. Digitized RF data is time-stamped and stored in memory. A trigger circuit in one or more RF receivers determines whether a trigger criterion or criteria has been met. When a trigger criterion or criteria has been met, some or all of the RF receivers in the network transmit select digitized RF data to a central processing device. The central processing device processes the select digitized data to detect if a signal is present.

Abstract: An information handling system (IHS) is provided which includes a system processor and a wireless section coupled to the system processor. While the system processor remains in a reduced power state, the wireless section is operable to be powered up to detect the presence of a wireless network external to the IHS and determine if that detected wireless network matches a network included in profile information stored in a memory that is accessible by the wireless section. An indicator is coupled to the wireless section and is operable to provide an indication that a wireless network is present.

Abstract: A system for testing radio frequency (RF) communications of a device capable of such communications is provided. The system includes a chamber for isolating the device from RF interference, an antenna that is suitable for RF communications with the device wherein the antenna is capable of communications over a range of frequencies, the antenna being located within the chamber, and a digital communication link for providing non-RF communications with the device.

Abstract: A communication device for receiving a signal in the form of a series of bursts, each burst being in one of a plurality of different available transmission modes, the communication device comprising: a receiver unit coupled to a single antenna operable to receive bursts in first and second polarizations, the receiver unit preferentially receiving signals in a selected polarization; a selection unit for selecting for each received burst in which polarization the receiver unit is to preferentially receive signals; and a signal analysis unit for analyzing each received burst to determine whether it meets a predetermined reception quality criterion; wherein the signal analysis unit is arranged to control the selection unit to: if a burst is to be received with a certain transmission mode and the last burst received with that transmission mode was received above the reception quality criterion, preferentially receive the burst in the same polarization in which the last burst was received; and if a burst is to be r

Abstract: A mobile phone includes a controller; a receipt adjusting unit for controlling receipt of the (RF) radio frequency signal and controlling receipt diversity under control of the controller; a first RF signal receiver for converting the RF signal received through the first antenna into a baseband signal to be transmitted to the controller under control of the receipt adjusting unit; a second RF signal receiver for converting the RF signal received through the second antenna into a baseband signal to be transmitted to the controller under control of the receipt adjusting unit; a transmission diversity adjusting unit for controlling transmission diversity under control of the controller; and an RF signal transmitter for converting the baseband signal transmitted from the controller into an RF signal to be transmitted to the first antenna and transmitting the RF signal to the second antenna under control of the transmission diversity adjusting unit.

Abstract: A multiple-input, multiple-output (MIMO) communication system is configured to perform user scheduling and associated precoding. The system includes multiple terminals and at least one base station configured to communicate with the terminals. The base station is operative to obtain channel vectors for respective ones of the terminals, to select a subset of the terminals based on magnitudes of the respective channel vectors, to compute a precoding matrix using the channel vectors of the selected subset of terminals, and to utilize the preceding matrix to control transmission to the selected subset of terminals. The system may be, for example, a time-division duplex (TDD) multi-user MIMO system in which the multiple terminals comprise autonomous single-antenna terminals.

Abstract: On transition of a 1x system from a standby state in which standby processing is performed to out of service state in an SHDR mode, the standby processing for the 1x system using a receiver unit (RX1) is halted and, when an instruction to switch from a call through an EVDO system using a transmitter-receiver unit (RX0/TX) and/or the receiver unit (RX1) to a call through the 1x system using the transmitter-receiver unit (RX0/TX) during the halt state is detected, a system detection process for detecting the 1x system is performed by using the receiver unit (RX1).

Abstract: A reception quality notifying method improves upstream-line throughput by reducing the data amount of reception quality data of downstream multicarrier signals to be transmitted in the upstream line. A low-power consumption base station apparatus and a wireless communication terminal apparatus may employ the reception quality notifying method. When a wireless communication terminal apparatus receives a downstream multicarrier signal and then notifies a base station apparatus of a subcarrier having a desirable reception quality for the downstream multicarrier signal, the wireless communication terminal apparatus produces reception quality data of a plurality of formats, then selects, from among the produced reception quality data, one having the lowest data mount. The selected reception quality data is transmitted to the base station apparatus by use of an upstream multicarrier signal subcarrier designated by the base station apparatus.

Abstract: An apparatus and method for controlling amount of information to be fed back in a multiple antenna system in a multi-user environment. The apparatus includes a channel estimator which estimates channel values by using an input signal; a Singular Value Decomposition (SVD) operator which decomposes singular values from the estimated channel values; and a feedback determining unit which uses the singular values to compute channel capacity that can be obtained according to the amount of channel information to be fed back, and selects the channel information to be fed back by using the channel capacity.

Abstract: A mobile wireless telecommunications system includes base stations of a first type operating according to a first air interface, and base stations of a second type operating according to a second air interface. Methods and apparatus are provided for handing over a mobile station in the system from a first base station, which is of the first type, to a second base station, which is of the second type. A communications link is established over the first air interface between the mobile station and the first base station. Data are received from the mobile station responsive to a signal received by the mobile station over the second air interface from the second base station, substantially without breaking the communications link with the first base station. The mobile station is handed over from the first to the second base station responsive to the data received therefrom. In particular, a method of conducting intersystem handover from a multicarrier system to a direct spread system is provided.

Abstract: A demodulation signal is generated by provision of a demodulation signal generation circuit to the semiconductor device capable of wireless communication and by obtainment of a difference between voltages having opposite polarities by the demodulation signal generation circuit. Alternatively, a plurality of demodulation signal generation circuits and a selective circuit which selects a demodulation signal generation circuit depending on characteristics of a received signal are provided, where operation of a second demodulation signal generation circuit stops when a first demodulation signal generation circuit is operated. The selective circuit includes an inverter circuit, a flip-flop circuit, and a selector circuit. When the second demodulation signal generation circuit has a comparator and the like, power consumption thereof is reduced.

Abstract: Wireless communication is carried out between devices. A highest frequency band is selected. When the selected frequency band includes an unused channel in which no disturbing wave is present, a maximum transmission rate at which a received field strength value exceeds a threshold value is determined. When the selected frequency band does not include an unused channel or one in which no disturbing wave is present or there is no transmission rate associated with the selected frequency band at which the received field strength value exceeds the threshold value, the next highest frequency band is successively selected and the above is repeated. When the maximum transmission rate is successfully determined, communication is initiated using the unused channel of the selected frequency band at the maximum transmission rate as a communication channel.

Abstract: Aspects of a method and system for signal processing are disclosed and may include receiving a plurality of wireless signals via a plurality of M receive antennas. Each of M phase shifters coupled to each of the M receive antennas may be set to operate in a bypass mode or with an arbitrary phase setting. Corresponding signal strengths of M signals generated when each of the M phase-shifters is coupled to each of the M receive antennas may be measured, while at least a portion of the M receive antennas are turned off. Selecting one of the M generated signals for processing without the use of an antenna switch, based on the measured signal strength. A signal strength of each of the generated M amplified signals may be measured while turning off at least one of the plurality of M receive antennas and without the use of the phase-shifters.

Abstract: Reception levels are measured in respective branches to compare the results of the measurements with one another to select the result of the measurement of a maximum reception level which is the highest reception level. The gains of variable gain amplifiers (6, 7) of all the branches including variable gain amplifiers (6, 7) included in a branch corresponding to the maximum reception level are adjusted to the same value such that output levels of the variable gain amplifiers (6, 7) are set to a preset target level.

Abstract: A system and method of controlling a portable radio may involve tuning a first receiver of the portable radio to a first broadcast from a first station, where the first broadcast includes specific program content. A switching event can be detected at the portable radio, where a second receiver of the portable radio may be tuned to a second broadcast from a second station in response to the switching event. The second broadcast can include the specific program content.

Abstract: An ultra-wideband clear channel assessment system uses a double-window energy technique for energy detection, which indicates a clear or busy channel.

Abstract: A method is disclosed for determining whether to transmit from a first unit to a second unit, where the transmission is one of a first type and a second type. In the method, a signal from the second unit is received at the first unit, and the strength of the signal as received at the first unit is measured. A determination is made of whether the transmission is of the first type or the second type, and a first threshold is selected if the transmission is of the first type, or else a second threshold is selected if the transmission is of the second type. The measured signal strength is then compared to the selected threshold, and the transmission proceeds only if the measured signal strength exceeds the selected threshold.

Abstract: A front-end architecture and processing method for a receiver in a multi-antenna, multi-band radio. Band-dependent components for multiple frequency bands are not duplicated in each receive chain. In one embodiment, a first receive chain includes band-dependent components for the first frequency band only. A second receive chain includes band-dependent components for the second frequency band only. The receive chains may be dedicated to particular antennas, or a switch may be utilized to route signals from different antennas to the different band-dependent components. Each receive chain may include band-independent components, or a single set of band-independent components may be utilized for the different receive chains by multiplexing the output of the band-dependent component sections.

Abstract: Complex antennas weights for use in beamforming in a multiple-antenna system are determined based upon clear channel assessment (CCA) information in a wireless networking environment.

Abstract: A system and method for indicating signal strength of a multi-mode wireless communication device is disclosed. The wireless communications device simultaneously displays signal strength indicators of multiple radio access technologies on the multi-mode wireless communication device. In an exemplary method, the multi-mode wireless device determines a first signal strength of a first radio access technology and displays the signal strength in a designated annunciator area of a display of the device. The device then determines availability and signal strength for a second radio access technology and further displays a second signal strength indicator in the annunciator area corresponding to the second determined signal strength of the second radio access technology.

Abstract: Methods, systems, and apparatuses for selecting alternate channels for broadcast radio channels, and for tracking alternate channel selections, are provided. Some radio systems provide alternate frequencies for tuned radio frequencies to use when the tuned radio frequency signal is no longer receivable. In aspects of the present invention, historical information is generated from alternate channel switching attempts. In further aspects, the generated historical information is used to aid in making a subsequent switch to an alternate channel.

Abstract: A method and apparatus for operating a radio reception system, which comprises a plurality of receivers assigned to a common output device, in which one of the receivers is designated as audio receiver and is tuned to a frequency of a radio transmitter, and outputs a signal received from the transmitter to the output device. At least one second receiver is designated as search receiver, and continuously searches its own reception frequency band for a frequency of the same transmitter. The system changes to a frequency of this transmitter, which was found by the search receiver, if the quality of the signal received by the audio receiver falls below a certain limit.

Abstract: An apparatus and method for supplying information so that power consumption in a digital broadcast receiving terminal can be reduced and a user can use an appropriate antenna depending on a situation. The digital broadcast receiving terminal includes an external antenna detachably assembled with the outside of the terminal a switch unit for selecting any one among the internal antennas and the external antenna, and a signal-receiving condition sensing unit capable of sensing the signal-receiving condition of the internal antennas and the external antenna. If it is impossible to receive the digital broadcast signal by using the internal antennas, the external antenna is used. If the external antenna is mounted, power is supplied only to an RF unit connected to the external antenna and the power supply to the remaining RF unit is cut off, reducing power consumption.

Abstract: A MIMO wireless system includes a transmitter having a parser that parses a bit stream into multiple spatial data streams and multiple interleavers corresponding to the multiple spatial data streams, where each interleaver interleaves the bits in the corresponding spatial data stream by performing multiple column rotations and row rotation, to increase diversity of the wireless system. The MIMO wireless system also includes a receiver that has deinterleavers that deinterleaves spatial bit streams transmitted by the transmitter.

Abstract: An integrated circuit radio transceiver and method therefor comprises a receiver front end that further includes a plurality of in-phase and quadrature phase receive processing block operable at first and second frequency bands wherein each of the receive processing blocks defines an ingoing signal path and further includes a plurality of filtering and amplification blocks disposed within the corresponding ingoing signal path, a plurality of RSSI blocks coupled to receive an ingoing analog signal from a corresponding plurality of nodes disposed throughout the ingoing signal path, each of the plurality of received signal strength indicator blocks producing a signal strength indication, and wherein a baseband processor is operable to receive a selected signal strength indication and to produce at least one gain setting to at least one amplification block within the in-phase or quadrature phase receive processing blocks.

Abstract: A dual or multi-mode wireless communication device has a first microprocessor for a first type of wireless signal, such as an IEEE 802.11 (“WiFi”) signal, and a second microprocessor for a second type of wireless signal, such as a cellular network signal. The received signal strength of the first type of wireless signal is monitored by the first microprocessor when the communication device is operating in a first wireless mode, and a notification message is sent from the first microprocessor to the second microprocessor whenever the received signal strength is determined to have changed from one level to another level. The second microprocessor then updates a received signal strength indicator (“RSSI”) icon on the screen of the wireless device to indicate the new received signal strength level.

Abstract: A system and method for estimating a channel in a wireless receiver is disclosed. The method preferably applies to a communication system using the OFDM standard. The method comprises receiving a block of “n” transmitted symbols, the symbols including pilot symbols and “d” data symbols, estimating a channel using the pilot symbols to create a channel estimate, choosing a group of “m” strongest symbols from the “d” received symbols, compensating the “m” strongest symbols using the channel estimate to create a group of “m” compensated symbols, re-estimating the channel using the group of “m” compensated symbols and pilot symbols; and either (1) repeating the steps of choosing a group of “m” strongest symbols, compensating the group of “m” strongest symbols and re-estimating the channel, or (2) using a latest channel estimate to compensate all symbols within the block.

Abstract: To provide a technique for analyzing radio wave condition affording improved accuracy of discrimination of radio wave propagation condition on a per-channel basis. Analyzer device 10 for analyzing the condition of radio waves used for wireless LAN communications comprises a reception portion 410 for receiving radio signals in a plurality of frequency bands; a first strength sensing portion 420 for sensing the field strength RSS1 of the center frequency band on a per-channel basis from a received radio signal; a despreading portion 430 for despreading the received radio signal; a second strength sensing portion 440 for sensing the field strength RSSI2 of the center frequency band on a per-channel basis from the despread radio signal; a discriminating portion 450 for discriminating radio wave condition by cross-checking RSSI1 and RSSI2 on a per-channel basis; and a display portion 460 for displaying the discriminated radio wave condition.

Abstract: A mobile phone includes a controller; a receipt adjusting unit for controlling receipt of the (RF) radio frequency signal and controlling receipt diversity under control of the controller; a first RF signal receiver for converting the RF signal received through the first antenna into a baseband signal to be transmitted to the controller under control of the receipt adjusting unit; a second RF signal receiver for converting the RF signal received through the second antenna into a baseband signal to be transmitted to the controller under control of the receipt adjusting unit; a transmission diversity adjusting unit for controlling transmission diversity under control of the controller; and an RF signal transmitter for converting the baseband signal transmitted from the controller into an RF signal to be transmitted to the first antenna and transmitting the RF signal to the second antenna under control of the transmission diversity adjusting unit.

Abstract: Low complexity channel estimation techniques for orthogonal frequency division modulation (OFDM) systems. The channel estimation techniques may be applied to IEEE 802.11a/g and 802.16 systems.

Abstract: A system and method are provided for measuring the amplitude of a received signal. The method receives an analog input signal, and compares a peak value of the analog input signal to a threshold level. Threshold transition data is generated, and the threshold level is adjusted in response to the transition data. The above-mentioned processes of comparing, generating, and adjusting are reiterated until the threshold level is about equal to the analog input signal peak value. As a result, a measurement of the analog input signal peak value is supplied. In one aspect, threshold transition data is converted into a digital value. Then, the measurement of the analog input signal peak value uses the digital value to represent the analog input signal peak value. Further, the digital value is converted into an analog voltage as feedback, and the analog voltage is used as the threshold level.

Abstract: An apparatus and method for frequency synchronization is proposed to obtain the pilot tones and evaluate the frequency offset and time offset for frequency synchronization. The frequency synchronization method has the following steps: filtering a baseband signal of a frequency correction burst by using multiple pre-filters; measuring the baseband signal and the signals output from the pre-filters to produce the first power value and the second power values respectively; normalizing the maximum second power value by using the first power value so as to produce the first detection value; using the samples of the baseband signal at different time points and a predetermined mathematical function to produce the second detection value; combining the first and second detection values to produce the third detection value; and using the third detection value to determine whether the frequency correction burst is received or not.

Abstract: A terminal 211 measures pilot signals transmitted in directional (beam) patterns from an adjacent cell and an own cell, and estimates reception qualities with the presence (high)/absence (low) of the interference from the adjacent cell. The terminal 211 requests data rate request values (DRC1, DRC2) corresponding to the reception qualities with the presence/absence of the interference to the base station 201. The base station 201 shares beam direction schedule with an adjacent cell base station, and confirms the presence/absence of interference to the terminal 211 for each slot. In accordance with the presence/absence of the interference, the base station 201 selects a suitable one of the two values of the data rates requested from the terminal 211, and modulates the data and transmits it.

Abstract: Antenna selection is performed in a multicarrier communication system based on antenna scores. In at least one embodiment, an antenna score is calculated for an antenna by determining grades for individual carriers associated with the antenna based on corresponding signal magnitude related parameters and then combining the grades in a predetermined fashion.