| 摘要 |
<p>A system for removing an echo signal and estimating an echo channel by using a multi-antenna is provided to remove the echo signal through pre-processing/post-processing or echo channel extracting and relieve the restriction on the amplification factor of a relaying device through spatial multiplexing of a transmission/reception array antenna structure. A transmission device(100) transmits a transmission signal to a relay equipment(200). The relay equipment re-transmits the transmission signal to a receiving device(300) through the transmission array antenna. The relay equipment comprises an Rx-antenna(210), an echo signal removing module(230) and a transmission array antenna(240). The Rx-antenna receives the transmission signal from the transmission device and the echo signal through an echo channel, and then applies them to a vector generating module. The vector generating module creates a pre-processing vector, and then applies the generated vector to the echo signal removing module together with the transmission signal and echo signal.</p> |
