Patent ID: 8174960

Claim:
A time division duplex wireless communication system based on Code Spreading-Orthogonal Frequency Division Multiple Access (CS-OFDMA) and smart antenna, comprising: an antenna array and multichannel transceiver, configured to receive a first CS-OFDMA signal from a terminal and transmit a second CS-OFDMA signal to the terminal, wherein receiving time does not overlap with transmitting time; a space processor, configured to estimate a space-frequency channel response of the terminal according to the first CS-OFDMA signal received by the antenna array and multichannel transceiver from the terminal; a demodulator, configured to perform a symbol detection according to the space-frequency channel response estimated by the space processor; an L2 processor, configured to process a symbol detected by the demodulator, allocate uplink and downlink channels to the terminal according to a channel allocation definition of the system, generate a message for the terminal and a modulator and transmit the message to the modulator; the modulator, configured to modulate the message into the second CS-OFDMA signal according to the space-frequency channel response estimated by the space processor and the message from the L2 processor, and transmit the second CS-OFDMA signal to the antenna array and multichannel transceiver.