| 摘要 |
PROBLEM TO BE SOLVED: To provide multiplexing for a multicarrier cellular communication system. SOLUTION: For quasi-orthogonal multiplexing in an OFDMA system, multiplex traffic channels are defined for each base station. The traffic channels in each set are orthogonal to one another and can be pseudo-random, with respect to the traffic channels in each of the other sets. The minimum number of sets of channels is used to support a given number of terminals selected for data transmission. Each terminal transmits the data and pilot symbols on its traffic channel. A base station receives data transmissions from all terminals and can perform receiver spatial processing on received symbols with spatial filter matrices to obtain detected data symbols. The spatial filter matrix for each subband can be derived, based on channel response estimates for all terminals transmitting on that subband. COPYRIGHT: (C)2011,JPO&INPIT |
