| 摘要 |
<p>A diversity receiver and a method of recovering symbols in a diversity receiver system comprises receiving first and second signals at first and second antenna elements (16, 20). The first signal (S1? G1, S2? G1) comprises first and second consecutive symbols (S1.S2) modified by a first channel coefficient (G1) and the second signal comprises the first and second symbols modified by a second channel coefficient (S1? G2, S2? G2). The first and second signals are delayed and the first and second channel coefficients are estimated by applying the delayed first and second signals to a master Rake finger (MR) having first and second outputs for the estimated the first and second channel coefficients. A complex conjugate of the estimated second channel coefficient (G2*) is produced. First and second composite signals (R1 and R2) are produced from the delayed first and second signals using a slave Rake finger by decoding the respective delayed first and second signals, producing a complex conjugate (R2*) of the second composite signal, interleaving the first composite signal and the complex conjugate of the second composite signal and providing an interleaved signal output, and applying said interleaved signal output, the estimated first channel coefficient and the complex conjugate of the estimated second channel coefficient to a space time transmit diversity derotator (DM) for the recovery of the first and second symbols.</p> |
