| 摘要 |
<p>A method and apparatus are described for estimating channels in a radio communication system using transmit diversity. Channel coefficients ĝ11, ĝ12, ĝ21, ĝ22 associated with a transmit diversity channel may be estimated in a radio communication system having a Base Station (BS) and at least one Mobile Station (MS) includes a transmit diversity channel transmitted over at least two propagation paths from at least two antennas associated with a BS. A sequence of pilot symbols is provided for each of at least two antennas for transmission from the BS to an MS over the transmit diversity channel. A series of symbols r1, r2, r3, r4 are received at the MS from the transmit diversity channel and a matrix P of values of the sequence of pilot symbols is established according to a relation which satisfies a full rank condition for the matrix P which may be stored together with P-1 in a memory. Channels estimates are determined using the matrix and the received sequence.</p> |
