Abstract: A method for identifying a reference point in time in a wireless communication system includes: receiving a first repeated sequence of symbols; receiving a second repeated sequence of symbols; performing an autocorrelation between the first and second sequences of symbols; and identifying as the reference point in time an autocorrelation null between the first and second repeated sequences of symbols. Apparatus for identifying a reference point in time in a wireless communication system includes: means for receiving a first repeated sequence of symbols; means for receiving a second repeated sequence of symbols; means for performing an autocorrelation between the first and second sequences of symbols; and means for identifying as the reference point in time an autocorrelation null between the first and second repeated sequences of symbols.

Abstract: A wireless communication device includes: a wireless communication unit that is configured to: perform a wireless communication in a first mode using a first frequency band serving as a first communication channel; and perform the wireless communication in a second mode using a second frequency band including the first communication channel and a second communication channel that is adjacent to the first communication channel; a detection unit that is configured to: monitor each of the first frequency band and the second frequency band; output a first detection signal when an interference signal is detected in the first frequency band; and output a second detection signal when the interference signal is detected in the second frequency band; and a determination unit that determines whether the interference signal is in the first communication channel or in the second communication channel based on the first and second detection signals.

Abstract: The present invention discloses a method for delivering paging from 1X network in HRPD (High Rate Packet Data) network, and the Secondary Color Code scheme is applied in the present invention, which enables the AN in which a MS/AT is registered to send an A13-paging request message to other adjacent ANs which are together therewith used for paging a mobile phone. For a MS/AT at multiple AN boundary, with the present invention, it enhances the possibility of receiving the paging through HRPD air interface control channel due to the service originated from 1X network, and can ensure the double network operation ability.

Abstract: Improvements are disclosed for in-band signaling, i.e., transmission of data in a voice channel of a digital wireless network during a voice call session. A family of narrow-band signaling methods is disclosed to successfully pass data-carrying signals through the low-bit rate modes of the EVRC-B vocoder commonly used in CDMA wireless channels. Some embodiments generate a tapered signaling waveform in tandem with another waveform using FSK-modulation. These features can be used in cell phones or other wireless communication devices, including automotive applications.

Abstract: The prevent invention provides a method for performing channel estimation and detection in a Multiple-Input-Multiple-Output (MIMO) system, including: generating a demodulation reference signal, DM-RS, pattern for an extended cyclic prefix (CP); and estimating and detecting channel performance based on the generated DM-RS signal pattern. The DM-RS pattern supports from rank 1 to rank 8 patterns for 8 layer transmission. A transmitter, a receiver and a system thereof are also provided. The solution of the present invention improves channel estimation accuracy, saves channel estimation implementation and implementation complexity at terminals.

Abstract: A multimode-multiband terminal includes an RF antenna for transceiving a CDMA-2000 signal and/or a WCDMA signal; an RF transceiver for demodulating a WCDMA pilot signal received from the RF antenna and outputting the demodulated WCDMA pilot signal; a pilot signal measurement unit for measuring an intensity of the demodulated WCDMA pilot signal to generate an Ec/Io; a WCDMA modem and a CDMA-2000 modem for performing a call processing according to protocols defined by a WCDMA standard and a CDMA-2000 standard, respectively; a flash memory for storing therein a modem-to-modem switching program capable of performing a switching between the WCDMA modem and the CDMA-2000 modem based on the Ec/Io; and a controller for loading the modem-to-modem switching program and activating the CDMA-2000 modem if a time lapse during which the Ec/Io is maintained smaller than a predetermined CDMA-2000 ON threshold THON is greater than a preset CDMA-2000 ON condition time Hd.

Abstract: Methods of transmitting a control signal using efficient multiplexing are disclosed. One of the method includes the steps of multiplexing a plurality of 1-bit control signals within a prescribed time-frequency domain by code division multiple access (CDMA) and transmitting the multiplexed control signals, wherein a plurality of the 1-bit control signals include a plurality of the 1-bit control signals for a specific transmitting side. Accordingly, reliability on 1-bit control signal transmission can be enhanced.

Abstract: Techniques to parse data into multiple (M) streams with selectable data rates are described. The modulation scheme and code rate for each stream are determined based on the data rate selected for that stream. The modulation schemes and code rates for all M streams are used to determine a parse cycle and the number of puncture cycles for each stream in the parse cycle. A sequence of puncture cycles is formed for the M streams such that the puncture cycle(s) for each stream are distributed as evenly as possible across the sequence. An encoder encodes traffic data in accordance with a base code (e.g., a rate 1/2 binary convolutional code) and generates code bits. A parser then parses the code bits into the M streams based on the sequence of puncture cycles, one puncture cycle at a time and in the order indicated by the sequence.

Abstract: A terminal, a method for operation of the terminal, and a method of interworking in a wireless communication system including an advanced network and a legacy network are provided. The method for operating the terminal includes monitoring a paging channel of the legacy network for a data paging message and a Circuit Switched (CS) paging message, when the terminal is in an idle state, receiving one of the CS paging message and data paging message, establishing a connection with the legacy network corresponding to the received one of the CS paging message and data paging message, wherein a CS voice connection is established with the legacy network if the CS paging message is received and a Packet Switched (PS) data connection is established with the legacy network if the data paging message is received, and performing a handover to the advanced network from the legacy network, if the PS data connection is established with the legacy network.

Abstract: A capture frequency decision method of deciding a capture frequency by executing a frequency search in which a correlation operation on a received signal, which is a CDMA (Code Division Multiple Access) signal, is performed at a plurality of search frequencies, includes: executing a first frequency search; setting a frequency for a side lobe check on the basis of a correlation integration time used in the first frequency search; selecting a plurality of search frequencies including the frequency for a side lobe check on the basis of a result of the first frequency search; executing a second frequency search of performing the correlation operation at the plurality of selected search frequencies; and deciding a capture frequency by executing a third frequency search using a result of the second frequency search.

Abstract: A system and method for demodulating and decoding a differentially encoded modulation code from a coded orthogonal frequency division multiplexing (COFDM) transmitter involves partitioning the differentially encoded modulation code into two-dimensional code blocks and demodulating and decoding the two-dimensional code blocks to produce demodulated and decoded information.

Abstract: A method for the multi-path detection in code division multiple access system is provided, and the method includes the following step: A, initially detecting multi-path for the sample points in the searching area, obtaining the sample points for processing peak detection (300); B, detecting whether the current nonzero points Pi and Pi+3 are both the partial peak (302), if yes, detecting the partial double peak (304), if no, detecting the partial single peak (303); C, buffering the delay and power information of nonzero sample points that are detected peak (305); D, judging whether the peak detection is ending (306), if ending, outputting the position and power information of multi-path that are buffered (308); or else, making the Pi+1 and Pi+4 as new Pi and Pi+3 (307), returning step B. A receiver of code division multiple access is also provided at the same time.

Abstract: A method for generating a codeword from a vector generated by combining four symbols P0, P1, P2 and P3 includes generating 16 vectors Vi (i=0˜F, where i is an index) by combining the four symbols with repetition allowed, and producing the codeword by mapping data to the 16 vector combinations.

Abstract: The present invention relates to a code multiplexing method which employs the parallel linear or nonlinear coding whose coding rate is more than one for the multiplexing transmission. When the coding rate is more than one, the parallel input bits sequence and the parallel output bits sequence have a one-to-one relationship. The aforementioned parallel coding method is beyond the finite field, and all the parallel coding polynomial set is coprime with each other. The method includes the following steps: compositing the encoding matrix B which contains K coding vectors, forming K parallel data transmission paths which correspond to the K coding vectors, processing the convolutional coding between each data path and the corresponding coding vector where the coding constraint length is L, forming the N-dimensional output vectors by summing the result of the K convolutional coding data paths, receiving the aforementioned N-dimensional coding output vectors and taking the sequence detection.

Abstract: A wireless telephone without IP capability nonetheless communicates with an infrastructure that uses IP. Virtual IP endpoints, such as Base Stations (BTS), not only communicate with the infrastructure using IP and with the telephone using over-the-air protocol, such as Code Division Multiple Access (CDMA), but one of the endpoints also selects the best frame over a call received by multiple endpoints, alleviating the need for a Base Station Controller (BSC) in the infrastructure. A handoff assist entity causes frame selection to be transferred to a second BTS in accordance with a handoff algorithm.

Abstract: N channels of encoded data are added into added data, which is compared with a first threshold of 2M?1?A and a second threshold of 2M?1?1, where M is the number of the bit positions of the binary representation of N and A is defined by 2M?(N+1). When the added data is less than the first threshold, it is selected. When the added data falls between the first and second thresholds, inclusive, either the added data or shifted data, obtained by adding A to the added data, is selected. When the added data exceeds the second threshold, the shifted data is selected. Based on output data representing the values of the respective bit positions of the binary representation of the selected data, the k-th output data, where k is a natural number less than M, is amplified into k-th amplified data having an amplitude level of 2k?1, and the M-th output data is amplified into M-th amplified data having an amplitude level of 2M?1?A. The first to M-th amplified data are multiplexed into a CDM signal.

Abstract: A signal transmission apparatus includes a symbol block generator configured to generate a first symbol block by multiplexing data information and control information in a symbol period, and a transmitter configured to transmit the first symbol block over a wireless communication network. In certain configurations, the transmitter is configured to transmit a predetermined number of symbol blocks within a transmit time interval.

Abstract: Interference is cancelled from a baseband signal by synthesizing interference from estimated symbols in interfering subchannels. The estimated symbols are hard-coded, soft weighted, or zeroed, depending on the value of an estimated pre-processed signal-to-interference-and-noise ratio (SINR) in each subchannel in order to maximize a postprocessed SINR. The estimated pre-processed SINR is obtained from averages of estimated symbol energies and estimated noise variances, or from related statistical procedures.

Abstract: A method and apparatus of providing a piggybacked positive acknowledgement/negative acknowledgement (ACK/NACK) (PAN) field indicator (PANI) and a polling indicator are disclosed. A combined field of a PANI bit, a relative reserved block period (RRBP) bit and an EGPRS supplementary polling (ES/P) field may indicate a polling scheme and a presence of a PAN field. Alternatively, the presence of the PAN field in the data block may be indicated by using a specific training sequence. Alternatively, a forward error correction (FEC) coding may be performed on the data block including the header, and the presence of the PAN field may be indicated by scrambling the encoded bits corresponding the header with a specific scrambling sequence. Alternatively, a header check sequence (HCS) may be generated and the presence of the PAN field is indicated by mixing a predetermined sequence with the HCS.

Abstract: A technique for determining a received signal strength indicator of a target base station at a subscriber station includes performing a discrete Fourier transform on a received signal to provide a transformed signal. In this case, the transformed signal occupies one or more segments of a channel and the one or more segments each include multiple subcarriers. A shift-n cross-correlation is calculated based on the transformed signal and a preamble sequence of the target base station to provide a coarse received signal strength indicator for the target base station.

Abstract: The present invention discloses a method and apparatus for implementing matched filter in a system using QPSK modulation. In the present invention, a multiplier is changed as a multiplexer by using the characteristic of the pilot sequence (or training sequence) so as to implement the matched filter.

Abstract: In a multi-carrier and multi-rate CDMA system, a base station transmits an index tag to a number of mobile stations. The index tag has a length indicating a transmission rate and all index tags are nodes in a code tree. In the code tree, mother nodes and their child nodes block each other and are not assigned to the mobile stations at the same time. At the same time, index tags of nodes in the same level of the code tree map are orthogonal to each other. The mobile station constructs an index tag matrix according to the index tag. Then, the index tag matrix is multiplied with a generating matrix that is stored in every mobile station to generate a spreading factor matrix whose rows respectively correspond to different carriers.

Abstract: An input signal INDATA inputted to a sender-side interface portion is encoded by an encoder, and a transmission signal generated by the encoding is transmitted to a receiver-side interface portion through two signal transmission lines. The input signal INDATA is encoded in such a manner that the logic level of the transmission signal transmitted through at least one of the two signal transmission lines is changed in any two consecutive elementary periods. The receiver-side interface portion is provided with a clock receiver, and a clock signal is generated based on the change of the transmission signals supplied from the two signal transmission lines.

Abstract: An apparatus for estimating a frequency shift and a time shift in a CDMA signal based on a CDMA code associated with a CDMA signal, having a modulation removal stage for removing a data modulation from the CDMA signal to obtain a modified CDMA signal. The apparatus further has a frequency domain transformer for transforming the modified CDMA signal to the frequency domain to obtain a modified CDMA spectrum and a frequency shift detector for detecting a group of candidate frequency shifts based on the modified CDMA spectrum. The apparatus further has a processing stage for processing the CDMA signal and a candidate frequency shift to obtain the time shift, when a combination of the CDMA signal, the CDMA code and the candidate frequency shift fulfills an optimization criterion and for selecting the candidate frequency shift as the frequency shift.

Abstract: A system and method for implementing a network encoding scheme includes buffering a signal in quantized form at a node of a network and permuting the signal into a particular order of code blocks. The code blocks are rotated using at least one key which has been assigned to the node, wherein the at least one assigned key is a value which is used to control the amount of rotation. The rotated code blocks are then combined to generate a combined signal. The combined signal is permuted back to generate at least one output signal.

Abstract: Provided is a telecommunication apparatus and a telecommunication method accomplishing a one-to-many, many-to-one, and many-to-many simultaneous accesses in a power line telecommunication of a code division multiple access (CDMA) by using an AC power line (including the ground).

Abstract: This invention provides an impulsive noise suppression method in orthogonal frequency division multiplexing. The method comprises an equalization and de-mapping step for estimating a preliminary estimation of signal and a total noise estimation by utilizing ideal channel estimation, de-mapping, and pilot insertion technique on received signal; and a SNR comparison step for determining a SNR by dividing said preliminary estimation of signal and said total noise estimation and comparing said SNR with a threshold value.

Abstract: In a data communication system capable of variable rate transmission, high rate packet data transmission improves utilization of the forward link and decreases the transmission delay. Data transmission on the forward link is time multiplexed and the base station transmits at the highest data rate supported by the forward link at each time slot to one mobile station. The data rate is determined by the largest C/I measurement of the forward link signals as measured at the mobile station. Upon determination of a data packet received in error, the mobile station transmits a NACK message back to the base station. The NACK message results in retransmission of the data packet received in error. The data packets can be transmitted out of sequence by the use of sequence number to identify each data unit within the data packets.

Abstract: A point-to-point communications system (20) for transmitting messages from any location (A) within a power distribution system or network (10) to any other location (B) within the network. A transceiver (12) at the one location includes a transmitter (X) that impresses a waveform (WR) on a waveform (WG) propagated by the network to supply power throughout the network. The transmitter is a resonant transmitter that includes a reactive load (13) which is selectively connected to and disconnected from the power distribution network. A controller (16) controls operation of the transmitter to connect and disconnect the reactive load from the network so to impress on the propagated waveform a dampened sinusoidal waveform whose characteristics represent information conveyed over the power distribution system. A receiver (Yn) at the other location receives and demodulates the dampened sinusoidal waveform to extract therefrom the information being conveyed by it.

Abstract: The transmitting side is equipped with chip steering section 30 that performs a chip steering that shifts the allocation of N×M chip elements upon their respective subcarriers by one chip for every transmission unit in sequence, and the receiving side is equipped with a parallel/serial conversion section and an inverse chip steering section that rearranges the allocation of the chip elements shifted in chip steering section 30 back to original.

Abstract: A method, a communication device for transmitting data in a communication system, and the communication system. The method includes: detecting the current channel quality; determining the overlapping coding times corresponding to the detected channel quality according to the corresponding relation between the channel quality and the overlapping coding frequency; performing coding operation of overlapping coding multiplexing technique to the data which is to be transmitted using the determined overlapping coding times and transmitting the coded data. The method improves the reliability of data transmission under the circumstance of channel quality being relatively poor, and improves the transmission efficiency, avoids the resource waste under the circumstance of channel quality being better.

Abstract: Performing approximate diagonalization of a correlation metric by user permutation to improve Multiuser Detector (MUD) processing. The system reorders the entries in the S-Matrix in order to move the bit decisions closer together in the decision tree. In one embodiment the reordering is a sequential pairwise correlation.

Abstract: A method of packaging a plurality of repeating commands for device command word (DCW) processing in a computer environment having an I/O link handling complex instruction chains for a processing operation is provided. Locate record information is packaged into DCW prefix parameter data. The locate record information includes an intent count argument. The plurality of repeating commands are embedded as a truncated concatenation to the first locate record information. The plurality of repeating commands are identified by redefining the intent count argument for the plurality of repeating commands as a repeat count argument using a flag argument incorporated into the locate record information. The repeat count argument indicates a number of times for a control unit in the computer environment to execute the plurality of repeating commands.

Abstract: A method for compressing a message is described comprising: identifying a first field and a second field within the message; applying a first set of code words to encode data in the first field; and applying a second set of code words to encore data in the second field.

Abstract: A communication system processes blocks of input data that include control words and a packet of information words are received. The packet has a start preceded by ones of the control words and an end followed by others of the control words. When the block consists exclusively of information words, a one bit block header having a first sense is appended to the block to form a frame. When the block does not consist exclusively of information words, the block is condensed to accommodate a TYPE word, the TYPE word is generated and inserted into the block and a one bit block header is appended to the block to form the frame. When the block does not consist exclusively of information words the one bit block header has a second sense, opposite to the first sense. Use of a one bit block header reduces overhead. Forward error correction is also utilized.

Abstract: A channel estimation circuit (12) of an individual CH path demodulation unit (1A-1L) performs a channel estimation from an individual CH. A channel estimation value correction circuit (22) of a shared CH path demodulation unit (2A-2L) then corrects a reception power fluctuation due to uplink transmission power control which is caused by the timing offset between the individual CH and the shared CH. The resultant data is used for the demodulation by a shared CH demodulation circuit (23).

Abstract: A communication unit, which includes a modem unit, performs communications with a targeted radio by setting a communication rate variably. A control unit acquires a delay characteristic in a radio channel between the communication unit and the targeted radio apparatus and an error vector by the radio channel. As the communication rate, the control unit determines a coding rate of error correction and a modulation scheme, based on the acquired delay characteristic and the error vector. In particular, the control unit determines the coding rate based on the delay characteristic and determines the modulation scheme based on the error vector.

Abstract: The present invention provides a method of terminal PTT registration based on CDMA trunking system and the system thereof, comprising: a user terminal is powered and a normal CDMA registration flow is completed, and afterwards the value of a PTT registration message counter is initialized; the user terminal sends a PTT registration message to a dispatching sub-system (server) and starts a PTT registration timer; and a corresponding process is performed according to the response message from the dispatching server, which is the reception of the trunking registration or the rejection of the trunking registration. Therefore the terminal with CDMA trunking function can avoid the problem caused by a failed PTT registration.

Abstract: Apparatus, and an associated method, for allocating data to communication channels of a multiple-input communication system and to select power levels at which the data is caused to be communicated upon the communication channels. Data allocation is made responsive to communication quality indications that identify communication conditions on the different ones of the channels. Data allocation and power level allocation is made to achieve best a selected performance parameter.

Abstract: A challenging problem is maintaining low power consumption in multi-channel (MC) systems, where multiple input signals demand several front-end analog signal-processing blocks to be replicated. A code-division multiplexing (CDM) system can be generalized as a signal compression-decompression involving an analog-to-digital converter (ADC). This invention utilizes CDM in MC front-end integrated circuits to significantly reduce the power consumption of such systems. The invention also extends CDM's data compression advantages to uncorrelated and weakly correlated MC signals through the introduction of a new Multi-Channel Signal Binning and Multiplexing (MCSBM) method and architecture. The proposed method achieves significant reductions in power consumption in comparison to a conventional time-division multiplexing quantizer, while adding only a modest amount of overhead and complexity.

Abstract: A method and apparatus for changing a Transmit Time Interval (TTI) based on a Hybrid Automatic Repeat Request (HARQ) process in a code division multiple access (CDMA) communication system that supports a packet data service through an Enhanced Uplink Dedicated transport Channel (E-DCH). According to the method and apparatus, a data transmission/reception is performed in a manner that a TTI change signal is received, the actual time point of TTI change is calculated based on the TTI change signal and the HARQ process of the previous TTI, and the TTI is changed at the calculated time point of TTI change.

Abstract: A first node seeking entry into a secure spread spectrum communications network sends a discovery burst at a low rate, and sends traffic bursts at a higher rate to exchange data rate for range. A receiving node receives discovery bursts via an omni-directional link and transmits and receives traffic bursts via directional links. As a node within the network detects a fading signal, it transmits a discovery burst at low rate on both its uplink and downlink channels. Other nodes may reply via the original uplink channel, and the fading node updates a list of candidate nodes through which it can relay through the network to its intended recipient by reversing the link direction of its original uplink and original downlink channels.

Abstract: A base station apparatus in a CDMA/TDD mobile communication system is provided. A signal is formed employing a frame configuration with a plurality of time slots and spreading processing utilizes a long spreading code for identifying a cell and a short spreading code for acquiring frame synchronization. The base station apparatus includes a first control channel former that forms a first control channel including a symbol that is spread by a first short spreading code. A second control channel former forms a second control channel including a symbol spread by a second short spreading code and positioned at a same timing as the symbol spread by the first short spreading code.

Abstract: In a communication network which performs transmission from a plurality of first communication devices to a single second communication device using a synchronous code division multiplexing technique, the phases of signals transmitted from the first communication devices are synchronized easily. The first communication devices control the transmission phase of spread modulated signals using phase control information received from the second communication device. A repeater generates a code division multiplexed signal by superposing the spread modulated signals transmitted respectively from the first transmission devices. The second transmission device demultiplexes the code division multiplexed signal received from the repeater, determines the optimum phase of the demultiplexed signals, and transmits the determined optimum phase to the first transmission devices as the phase control information.

Abstract: A subscriber access unit includes a transceiver for providing wireless communication of digital signals. The digital signals are communicated to a base station using at least one radio frequency (RF) channel via Code Division Multiple Access (CDMA) modulated radio signals defined by orthogonal codes. Orthogonal subchannels are made available by the base station within each CDMA RF channel. A bandwidth manager is connected to the transceiver, and when the transceiver is actively sending data, at least one orthogonal subchannel is allocated by the base station on an as-needed basis. The number of orthogonal subchannels being allocated changes during a given session. The transceiver, when powered on but not actively sending data, provides an idling mode connection on a reverse link. The idling mode connection is based on an orthogonal subchannel shared with at least one other subscriber access unit, but utilizes different time slots of the shared orthogonal subchannel.

Abstract: There is provided a propagation delay time adjustment method for adjusting the propagation delay time occurring within a reception circuit for each channel of a center node device configuring a 1-to-N communications system in which communication is performed between the center node device and N (N being an integer of 2 or more) individual edge node devices using a Synchronous Code Division Multiplexing method, the center node device comprising a main control section, and each of the edge node devices comprising an auxiliary control section that controls the propagation delay time in cooperation with the main control section, the transmission delay time adjustment method comprising: transmission permission signal transmitting; transmission controlling; reception phase controlling; reception validity determining; optimum reception phase determining; and reception phase setting in which the main control section sets the optimum reception phase as the reception phase for the reception circuit.

Abstract: Disclosed are a method, information processing system and wireless communications device for suppressing interference. The method includes receiving a transmission from each of a target (104) and interfering device (106). A set of pilot sequences (604) for an interfering device (106) and the target device (104) are determined. A channel estimate (608) for the target device (104) and the interfering device (106) is determined. A set of combining weights (610) associated with each pilot sequence for the interfering device (106) is determined as a function of the determined channel estimates (608) of the target device (104) and the interfering device (106). At least one pilot symbol estimate (612) for each pilot sequence in the set of pilot sequences for the interfering device is determined as a function of the received transmission and the determined set of combining weights (610).

Abstract: An apparatus and method for adjusting a desired expression section according to input bit values in a mobile communication system that expresses only a defined partial section of the input bit values in order to make the number of output bits be less than the number of the input bits, and maps bit values included in unexpressed sections to a specific value is provided. In the apparatus and method, a measurer divides possible output bit values into at least three sections, and measures output frequencies of output bits for the respective sections for a predetermined time. A controller adjusts the desired expression section, when an output frequency for a specific section is greater than output frequencies for other sections.

Abstract: Provided is a method for adjusting Fast Fourier Transform (FFT) window positioning in a Multi Band Orthogonal Frequency Division Multiplexing Ultra-Wideband (MB-OFDM UWB) system. The method includes the steps of acquiring an initial FFT window position and a frequency hopping position, demodulating a received signal by using the initial FFT window position and the frequency hopping position acquired in the acquiring step, transmitting received data information to a Media Access Control (MAC) layer with a reception frame (RX frame) structure and judging at the MAC layer whether or not a packet error is occurred based on Frame Check Sequences (FCSs), and if no packet error is occurred, returning to the demodulating step, and if the packet error is occurred, changing a register map by using a predetermined interface line in a MAC-physical layer (MAC-PHY) interface to thereby adjust the FFT window position and the frequency hopping position, and then returning to the demodulating step.

Abstract: The transmission apparatus according to the present invention includes a switching device that switches the multiplexing destination of mask symbols and uses this switching device to switch the multiplexing destination of the mask symbols so that the mask symbols multiplexed with control channel signals transmitted in parallel from a plurality of antennas may be transmitted from only one antenna at each transmission timing.