Abstract: Briefly, a wireless communication device that includes a processor to enable a determined number of receivers of a MIMO system according to a value provided with a request to enable the receivers is provided. A method for enabling the receivers of MIMO system is also provided.

Abstract: A method (300) and system (100) for sharing a controller for a combined cellular phone and satellite radio includes a cellular phone module (102), a satellite radio module (106), and a controller module (108) having a digital signal processor (120) shared by the cellular and satellite modules. A base band processor (118) of the satellite module can provide a digital audio output (107) to a stereo decoder (122) of the controller module and a base band module (112) of the cellular phone module can provide a digital audio output (109) to the stereo decoder. The base band processor of the satellite module can provide compressed audio (111) to the DSP for longer term storage within a memory (129). The DSP can also receive control signaling (113) from the base band processor of the satellite radio module and control signaling (117) from the base band processor of the cellular phone module.

Abstract: Briefly, in accordance with one or more embodiments, a MIMO repeater turns off one or more transmitters of the MIMO repeater if there is no mobile station in the coverage area of the MIMO repeater to reduce noise enhancement on a MIMO network. If there is a repeater in the coverage of the MIMO repeater, the MIMO repeater turns off or keeps off its transmitters that do not have a sufficient channel quality in a respective antenna path, and turns on its transmitters having a sufficient channel quality in the respective antenna path transmits uplink signals from the mobile station via the turned on transmitters to further reduce noise enhancement by not using transmitters that do not significantly contribute to signal quality.

Abstract: A cellular repeater and method of operating a cellular repeater are disclosed. The cellular repeater includes a variable-gain donor antenna adapted to communicate with a base station and a variable-gain server antenna adapted to communicate with a mobile device. A signal from a selected base station selected from one or more available base stations that are available to the cellular repeater is measured at the donor antenna. The gain of the donor antenna is adapted to maximize a signal level of the signal received at the donor antenna from the selected base station. A calibration signal from the server antenna is measured at the donor antenna to determine a radio frequency isolation between the donor antenna and the server antenna. The gain of the server antenna is adapted to maximize the radio frequency isolation between the donor antenna and server antenna.

Abstract: Systems and methods are provided for enhancing signal quality at receivers in a wireless network. In one embodiment, an antenna is selected from a subset of antennas based on a signal quality parameter such as received signal power or signal-to-noise ratio (SNR). In another embodiment, multiple antennas are applied to independent signal processing paths for the respective antennas where output from the paths is then combined to enhance overall signal quality at the receiver.

Abstract: A system for the coexistence between wireless communication modules sharing an antenna is disclosed. A wireless communication chipset includes a first wireless communication module capable of transmitting and receiving first wireless communication signals, a second wireless communication module capable of transmitting and receiving second wireless communication signals and a combine-separate unit capable of generating a first combined signal and separating a second combined signal. The switching device is configured to selectively transmit the first combined signal or receive the second combined signal. The connection device has a first port coupled to an antenna, a second port connected to the first port for transmitting the first combined signal or receiving the second combined signal, and a third port connected to the first port for transmitting or receiving the second wireless communication signals via the second path and the antenna.

Abstract: An active link wireless cable mesh network and a method for transmitting data in a wireless cable mesh network are provided. A plurality of end devices are connected in a mesh configuration. A data message is transmitted to a first end device via one of a plurality of antennas radiating elements which form a phased array antenna. If the message is not successfully received, the antenna radiating elements is steered to another transceiver in the mesh network to complete the transmission.

Abstract: A disclosed radio relay apparatus receives signals from a transmitter via multiple receive antennas and transmits relay signals derived from the received signals to a receiver via multiple transmit antennas.

Abstract: An apparatus and method for beamforming in a wireless communication system are provided. The base station apparatus includes a calculator, a plurality of formers, and a plurality of adders. The calculator calculates a beam coefficient considering interference to a neighbor sector to be applied to transmission signals to mobile stations. The plurality of formers performs beamforming for a transmission signal to each mobile station within a corresponding sector using the beam coefficient. The plurality of adders adds the sector-based beamformed signals each provided from the plurality of formers, on a per-transmission-antenna basis.

Abstract: The invention relates to a single-port signal repeater. The repeater is connected in parallel to the communication means (3), on which only one access point (5) is needed. The repeater (4) comprises an amplifier, a hybrid circuit and a feedback and increases the range and transmission capacity for communications made on a conducted medium without the drawbacks of traditional repeaters, which have to interrupt the line and need two access points to the channel.

Abstract: Disclosed are a semiconductor integrated circuit device and a wireless communication system that are capable of improving reception sensitivity. The wireless communication system includes, for instance, a first duplexer, a second duplexer, a first low-noise amplifier circuit, and a second low-noise amplifier circuit. A transmission band compliant with a communication standard is split into two segments for use, namely, low- and high-frequency transmission bands. A reception band compliant with the communication standard is split into two segments for use, namely, low- and high-frequency reception bands. The first duplexer uses the low-frequency transmission band and low-frequency reception band as passbands. The second duplexer uses the high-frequency transmission band and high-frequency reception band as passbands.

Abstract: A mobile station (101) for use in a wireless communication system includes a steerable antenna, means for obtaining location information relating to a current location of the mobile station and a steering controller for controlling a pointing direction of the steerable antenna using the location information and characterized in that the mobile station includes a memory holding a database of optimal pointing directions of the steerable antenna for given locations and the steering controller is operable to steer the antenna to the optimal pointing direction indicated in the database for the current location. Also described is a system and a method in which the mobile station operates.

Abstract: Using as a reference a known signal assigned to one of a plurality of streams that constitute a packet signal, a control unit applies a cyclic timing shift to known signals assigned to the other streams so as to produce packet signals which are to be transmitted finally. While varying the amount of timing shift, the control unit produces a plurality of packet signals and appends an identification number, with which to uniquely identify each of the plurality of produced packet signals, to each of the packet signals. A baseband processing unit and the like transmit, as a transmission rate inquiry signal, a packet signal constituted by a plurality of streams where the amounts of timing shift are made to differ, and receive a response signal to which the same identification number is appended for the inquiry signal.

Abstract: A switching element is provided that realizes an stabilize a potential between the gates of the multi-gates without an increase in the insertion loss, and an antenna switch circuit and a radio frequency module each using the switch element. The switching element includes two ohmic electrodes 39, 40 formed on a semiconductor substrate, at least two gate electrodes 41, 42 disposed between the two ohmic electrodes, and a conductive region 45 disposed between the adjacent gate electrodes among the at least two gate electrodes, a field effective transistor being structured by the two ohmic electrodes, the at least two gate electrodes, and the conductive region. The conductive region has a wider portion that is wider in width than the conductive region interposed between the adjacent gate electrodes on one end thereof. The distance between the adjacent gate electrodes is narrower than the width of the wider portion. Resistors 44, 46 are connected in series between the two ohmic electrodes through the wider portion.

Abstract: A wireless repeater has a receiving antenna for receiving an input signal and a transmitting antenna for transmitting an amplified signal where the input signal is a sum of a remote signal and a feedback signal. The repeater includes an echo canceller receiving the input signal and generating an echo cancelled signal by estimating a feedback channel between the transmitting antenna and the receiving antenna and cancelling a feedback signal estimate from the input signal, an amplifier for amplifying the echo cancelled signal and providing the amplified signal to the transmitting antenna, and a variable delay element receiving the echo cancelled signal and introducing a first delay to the echo cancelled signal. The first delay is selected to optimize the estimation of the feedback channel, thereby optimizing the cancellation of the feedback signal. The delayed echo cancelled signal is coupled to the echo canceller as a reference signal for estimating the feedback channel.

Abstract: A method and apparatus for enabling multi-band transmission includes transmitting a beacon on a first radio band and transmitting the beacon on a second radio band. The beacon includes coordination information for transmission on the first and second radio bands.

Abstract: One or more satellites may generate multiple beams. The beams may facilitate communication over multiple communication frequency bands including a relatively high capacity frequency band and a relatively fade-resilient frequency band. The beams may overlap. User terminals and/or gateways in a beam intersection may select from among the multiple communication frequency bands to communication with the satellite(s). Responsive to detection of rain fade, some of the user terminals and/or gateways may be instructed to use the relatively fade-resilient frequency band. The multiple communication frequency bands may be assigned to the user terminals and/or gateways so as to maximize total system capacity.

Abstract: A space segment for a radioterminal communications system includes a satellite having service link antennas of different sizes that are configured to communicate with at least one radioterminal. The service link antennas of different size may serve different sized geographic areas, which may at least partially overlap. Analogous radioterminal communications methods also are provided.

Abstract: A multiple device to one-antenna combining circuit for transferring wireless communication signals from a first and second wireless communication device connected to a donor antenna is described. The circuit comprises a first single-stage circulator configured to be coupled to a transmission-reception path of the first wireless communications device; a two-stage circulator coupled to the first single-stage circulator and configured to be coupled a transmission-reception path of the second wireless communications device; a two-way splitter coupled to the two-stage circulator and configured to be coupled a transmission-reception path of the donor antenna; and a second single-stage circulator coupled between the two-way splitter and the first single stage circulator. The wireless transmissions of the first wireless communications device travel from the first signal stage circulator to the two-stage circulator to the two-way splitter to the donor antenna. The first wireless device can be a repeater.

Abstract: A band translation method and device for selecting two or more desired frequency bands of data and bandstacking the two or more desired frequency bands of data into a single output.

Abstract: The present invention relates to a method of transmitting and receiving data in soft handoff of a wireless communication system. According to an aspect of the present invention, in the method of receiving data in soft handoff of a wireless communication system, a mobile station receives a first sequence being generated by interleaving transmission data using a first interleaver pattern, and also receives a second sequence being generated by interleaving the transmission data using a second interleaver pattern. Then, the mobile station combines and decodes the first sequence and the second sequence before receiving an entire frame having the first sequence allocated thereto.

Abstract: A wireless client device is associated with an access point in an association having a value for a listen interval parameter. The wireless client device determines, according to predefined considerations, a different value for the listen interval parameter, and declares the different value for the listen interval parameter in a wireless transmission to the access point. The listen interval parameter specifies a number of beacon intervals that can pass from a time the wireless client device listens for a beacon frame from the access point before the wireless client device listens for a next beacon frame from the access point.

Abstract: A first plurality of wireless devices associated with a wireless network element is communicated with using a first multi-antenna mode. There is a first number of the first plurality of wireless devices. A second plurality of wireless devices associated with the wireless network element is communicated with using a second multi-antenna mode. There is a second number of the second plurality of wireless devices. A request for traffic resources is received from a wireless device associated with the wireless network element. In response to the request for traffic resources, the request for traffic resources is granted based on whether the first number satisfies a first criteria and whether the second number satisfies a second criteria.

Abstract: A radio base station according to the present invention is equipped with a determination unit that compares a first signal quality of a first output signal which is output by an adaptive array antenna and a second signal quality of a second output signal which is output by an adaptive equalizer and determines whether the improvement effect of the second signal quality with respect to the first signal quality is below expectation. When the determination unit determines that the improvement effect is below expectation, a controller stops power supply to the adaptive equalizer and the calculation of an equalization weight by a weight calculator, and outputs the first output signal as the output signal of a receiver.

Abstract: A method and an apparatus for uplink transmission using multiple uplink carriers are disclosed. A wireless transmit/receive unit (WTRU) selects a dedicated channel medium access control (MAC-d) flow with highest priority data to be transmitted and performs uplink carrier selection and enhanced dedicated channel (E-DCH) transport format combination (E-TFC) restriction and selection to select a carrier among a plurality of carriers and select an E-TFC based on a maximum supported payload, a remaining scheduled grant payload of the selected carrier and a remaining non-scheduled grant payload. The WTRU then generates a medium access control (MAC) protocol data unit (PDU) for E-DCH transmission via the selected carrier based on the selected E-TFC.

Abstract: Method and apparatus for uplink transmission using multiple antennas are disclosed. A wireless transmit/receive unit (WTRU) performs space time transmit diversity (STTD) encoding on an input stream of a physical channel configured for STTD. Each physical channel may be mapped to either an in-phase (I) branch or a quadrature-phase (Q) branch. The WTRU may perform the STTD encoding either in a binary domain or in a complex domain. Additionally, the WTRU may perform pre-coding on at least one physical channel including the E-DPDCH with the pre-coding weights, and transmitting the pre-coded output streams via a plurality of antennas. The pre-coding may be performed either after or before spreading operation.

Abstract: A method and device for determining an antenna cooperation set, and a method and device for determining a base station cooperation set in the mobile communication field are provided. The method includes that a signal joint processing system obtains the channel quality between a mobile terminal and at least two base stations, determines the base stations, which are corresponding to the channel quality higher than the channel quality threshold, as the cooperation base station set of the mobile terminal. Because the channel quality between the mobile terminal and the antenna of each base station is used to determine the cooperation antenna set dynamically, therefore, the determined cooperation antenna set includes the antennae that have very strong interference to the mobile terminal, or the antennae that have been strongly interfered by the mobile station.

Abstract: A wireless communication device includes a transceiver configured for communication using multiple radio access technologies. An antenna array is coupled to the transceiver, and includes a first antenna element and a second antenna element. A control circuit is operable to detect an available one of the radio access technologies based on a wireless signal received at the antenna array, and is operable to automatically alter a configuration of the antenna array by switching the first and/or second antenna elements between active and inactive states responsive to detection of the available one of the radio access technologies. Related methods of operation are also discussed.

Abstract: A system for enabling use of ultra-small aperture terminals in satellite communications is provided. The system comprises a transmitter configured to receive an input signal having information, a bandwidth, and an amplitude, replicate the input signal into two or more replications of the input signal, convert each of the two or more replications to have a frequency tuned to two or more corresponding satellite transponders while maintaining the bandwidth and all the information of the input signal, and combine the two or more replications into a single uplink signal. A transmit antenna is configured to transmit the uplink signal to the two or more satellite transponders.

Abstract: Methods and apparatus for improved utilization of air link resources are discussed in wireless communications systems employing multi-sector base stations and wireless terminals with multiple antennas. Timing synchronization is maintained across the base station sectors, and the same set of tones are used in adjacent sectors. In a sector boundary region, which is typically a high interference region, a wireless terminal is set to a sector pair state and operated in a MIMO mode of operation, communicating with two adjacent base station antenna faces of the same base station concurrently, the two different adjacent base station antenna faces corresponding to different adjacent sectors. Thus, typically high interference sector boundary regions, are converted into high capacity regions by having the sectors coordinated and utilizing MIMO techniques.

Abstract: An antenna assembly includes a reflector having a focal plane, a first feed element located along the focal plane that illuminates the reflector to create a first contour beam at a first frequency and a second feed element located further from the reflector than the first feed element that illuminates the reflector to create a first spot beam at a second frequency, the second frequency being different than the first frequency.

Abstract: Techniques for performing power control and handoff are described. In an aspect, power control (PC) is supported with multiple PC modes such as an up-down PC mode and an erasure-based PC mode. One PC mode may be selected for use. Signaling may be sent to indicate the selected PC mode. If the up-down PC mode is selected, then a base station estimates the received signal quality for a terminal and sends PC commands to direct the terminal to adjust its transmit power. If the erasure-based PC mode is selected, then the base station sends erasure indications that indicate whether codewords received from the terminal are erased or non-erased. For both PC modes, the terminal adjusts its transmit power based on the power control feedback (e.g., PC commands and/or erasure indications) to achieve a target level of performance (e.g., a target erasure rate for the codewords). The erasure indications may also be used for handoff.

Abstract: A generalized high performance navigation system is provided using low earth orbit (LEO) satellites. In one embodiment, a method of performing navigation includes receiving a LEO signal from a LEO satellite. The method also includes decoding a navigation signal from the LEO signal. The method further includes receiving first and second ranging signals from first and second ranging sources, respectively. In addition, the method includes determining calibration information associated with the first and second ranging sources. The method also includes calculating a position using the navigation signal, the first and second ranging signals, and the calibration information.

Abstract: Methods and apparatus for selectively switching one or more antennas in a multiple-input, multiple-output (MIMO) antenna array so as to mitigate interference with another RF interface within the same space-constrained device, based on radio frequency isolation. In one embodiment, the MIMO interface comprises a WLAN interface having a 2×2 or 3×3 array of antennae which are placed in a wireless device in an asymmetric fashion with respect to the antenna of the second interface, and the other interface comprises a PAN (e.g., Bluetooth) interface operating in an overlapping frequency band (e.g., ISM band). When both interfaces are operating, interference is mitigated through selectively switching off one or more of the MIMO antennae, and using the remaining antenna(e) having the best isolation from the Bluetooth antennae.

Abstract: A satellite communications system has a hub terminal which communicates with a remote terminal through a satellite. The hub terminal 100 includes a transmitting modulator, power booster, up-converter and Power Amplifier (PA), and a transmitting station. The transmitting modulator generates a modulated signal, which is output to the power booster. The power booster receives the modulated signal and generates a spectral replication of the signal. The signal is then up-converted and amplified, and transmitted as an uplink signal to the satellite via a transmitting antenna. A remote station antenna receives the corresponding downlink signal. Following LNB/LNA and down-conversion, the signal is passed to a diversity combiner. The diversity combiner aligns the replicated signals by frequency and phase and generates a power-boosted signal. Accordingly, the system enables the use of ultra small antennas by providing increased power.

Abstract: A wireless repeater having a receiving antenna for receiving an input signal and a transmitting antenna for transmitting an amplified signal includes first and second front-end circuits and a repeater baseband block coupled between the first and second front-end circuits. The repeater baseband block includes a channel estimation block, an echo canceller implementing time domain echo cancellation, a variable gain stage controlled by a gain control block implementing digital gain control, a first variable delay element introducing a first delay before or after the echo canceller, a second variable delay element introducing a second delay to the output signal. The delayed output signal is coupled to the channel estimation block as a reference signal for estimating the feedback channel, to the echo canceller as a reference signal for estimating the feedback signal, and to the gain control block for monitoring the stability of the repeater.

Abstract: In a Multiple-Input Multiple-Output (MIMO) wireless local area network (WLAN) system, a method is provided for selecting at least one antenna from a plurality of antennas and transmitting a data frame from a station to an access point via the selected antenna or antennas. A method for transmitting data from a plurality of stations to an access point in the MIMO WLAN system includes detecting a channel status of a channel from the access point to each transmitting antenna of the station, selecting at least one transmitting antenna from among the station's transmitting antennas based on the detected channel status, and transmitting a data frame from the station to the access point via the selected transmitting antenna or antennas.

Abstract: A payload includes one or more antennas for receiving polarized radiofrequency signals; a device for regenerating radiofrequency signals by filtering, frequency transposition, and amplification; and antennas for transmitting the regenerated radiofrequency signals to one or more terrestrial terminals. The radiofrequency signal regeneration device includes a plurality of regeneration channels, each channel consisting of an amplification device capable of amplifying two radiofrequency signals having separate frequency bands and the transmission antennas associated with a regeneration chain are capable of transmitting two regenerated radiofrequency signals having orthogonal polarization directions and intended for cells belonging to a single cell layout that uses at least two separate frequency bands and two separate polarizations.

Abstract: A method for providing multiple-input multiple-output (MIMO) feedback information and configuration information. The method includes transporting the MIMO feedback information, configuration information, or both over an uplink relay link using higher layer signaling. Also included is a method for providing uplink data transmission over an access link. The method includes transporting the uplink data over an uplink access link using orthogonal frequency-division multiplexing access (OFDMA). Also included is a relay node comprising a processor configured to promote transmitting MIMO feedback information, configuration information, or both over an uplink relay link using higher layer signaling. Also included is a user agent (UA) comprising a processor configured to promote transmitting uplink data over an uplink access link using OFDMA.

Abstract: An assembly of a low-noise block converter and a filter for a satellite antenna includes a low-noise block converter, a filter, and a connecting component. The low-noise block converter includes an output circuit, and the filter includes a filtering circuit. The connecting component includes a sleeve part for engaging threadedly the low-noise block converter and the filter, and a core extending through the sleeve part and interconnecting electrically the output circuit and the filtering circuit. By virtue of the sleeve part of the connecting component, connection between the low-noise block converter and the filter can be reinforced to reduce interference. The sleeve part can also serve as a ground circuit between the low-noise block converter and the filter so as to shorten a ground path, thereby reducing signal loss.

Abstract: Methods and apparatus are disclosed for applying successive multi-rank beamforming strategies (e.g., successive precoding strategies) for the design of precoders over a set of parallel channels. Successive beamforming is applied to a narrow band channel model and is also applied for finer quantization of a single beamforming vector (e.g., recursive beamforming). A first embodiment provides the optimal approach with high complexity. An alternative embodiment provides successive beamforming for near optimal precoding selection with medium complexity. A low complexity method for precoder selection is also provided wherein a channel representative matrix for the set of parallel channels is determined and successive beamforming on the calculated channel representative is applied.

Abstract: A radio frequency radiation module includes a beam forming network capable of applying a signal including contributions to several beams, to several channels. Each channel has a high power amplifier without redundant units, and an antenna radiating feed connected to the output of the amplifier. The beam forming network has a device for selective compensation for failure of one of the channels, increasing the power of the contribution of at least one of the signals to a beam for which the radiation is affected by the failure.

Abstract: Provided is an on-channel repeater, which includes a receiver for receiving radio frequency (RF) signals; a subtractor for subtracting replica from the RF signals to thereby produce output signals of the subtractor; a repeating process unit for performing a repeating process onto the output signals of the subtractor; and a replica generator for calculating replica based on the output signals of the subtractor and the signals obtained after repeating process performed thereon and feeding the replica back to the subtractor.

Abstract: A broadcast satellite single wire interface. Such an interface comprises a low noise block amplifier module having multiple outputs, a plurality of filter banks, each filter bank coupled to each of the outputs of the low noise block amplifier module in a respective fashion and comprising a plurality of filters, and a plurality of analog-to-digital (A/D) converters, each A/D converter coupled to a filter in the plurality of filters in the plurality of filter banks in a respective fashion, wherein the A/D converters directly sample incoming downconverted broadcast satellite signals and the sampled incoming downconverted broadcast signals are output on a single wire in a stacked output.

Abstract: The invention relates to methods, systems, and satellites that employ an off-set pattern of spot-beams to transmit signals or television signals over a desired area of the earth. In one example, a heavily populated metropolitan area in the continental United States is covered by at least two patterns of spot-beams, where the patterns are off-set to one another by a lateral or translational displacement, rotation, or both. The off-set patterns can be used in conjunction with existing satellites and systems and incorporated into new satellites and systems. The methods reduce problems associated with the straddling of subscriber areas caused by local-into-local requirements, and advantageously allow increased spot-beam capacity, and the reduction in earth uplink stations.

Abstract: A system and method are provided for more effectively utilizing modems in a WiMAX environment, so as to improve network connectivity while providing access for both fixed as well as portable computing devices. The apparatus connects one or more computing devices to a network-based information system through at least a first WiMAX modem that is located within the apparatus. A second WiMAX modem can be removably coupled to the apparatus so as to improve network connectivity and operability. In the event, the second WiMAX modem is removed and coupled to a portable computing device, network connectivity provided by the first WiMAX modem is maintained.

Abstract: A distributed antenna system comprises a base transceiver station, a plurality of distributed antenna units and a signal routing apparatus. The base transceiver station has a plurality of output ports that generate a plurality of downlink signals having overlapping transmit frequencies and containing different communication content. The different communication content is directed toward each of a plurality of mobile units. The base transceiver station also has at least one uplink receive port that receives an uplink signal. The uplink signal includes communication content received from at least one of the mobile units. The plurality of distributed antenna units have coverage areas that are non-overlapping or only partially overlapping.

Abstract: Wireless communication is provided using very low frequency signals to environments that are otherwise difficult to reach. In one embodiment, a mobile wireless system is configured to automatically orient its antenna. A monitoring module is used to detect a current signal strength of a received radio frequency signal, as well as a current position for the mobile system. This information is compared to an expected signal strength for the current position in order to determine if the antenna should be adjusted or otherwise realigned.

Abstract: A relay station for use in a relay network may include an antenna, a radio, and an electronic circuit. The antenna may include a plurality of prongs. The radio may be configured to transmit and receive radio data using the antenna. The electronic circuit may be configured to select between a first mode of operation for the antenna and a second mode of operation for the antenna. The first mode of operation of the antenna may include an omni-directional mode of operation. The second mode of operation may include a directional mode of operation.

Abstract: A transmitting/receiving circuit holds a communication at a frequency f1 by using an antenna or an antenna, and a transmitting/receiving circuit holds a communication at a frequency f2 by using an antenna. In response to a receiving signal intensity, a switching circuit connects any one of the antennas to the transmitting/receiving circuit as a selected antenna for use in communication, and connects the other antenna to a terminating circuit as a non-selected antenna. The terminating circuit connected to the non-selected antenna has an impedance that satisfies a predetermined phase condition at the frequencies f1, f2 respectively, suppresses an inter-antenna coupling between the non-selected antenna and the selected antenna and the antenna, and suppresses degradation in antenna characteristic caused due to the inter-antenna coupling between the selected antenna and the antenna.