| 摘要 |
<p>Symbols are encoded for transmission over a plurality of transmit channels by applying a Walsh spreading code to each bit in a block of bits to produce a set of spread sequences, summing the spread sequences element by element to create a block of uncoded channel symbols and transforming blocks of uncoded channel symbols using a block diversity coder into a block of encoded channel symbols. The block diversity coder may be an Alamouti diversity encoder. Channel diversity may be provided by space and time or frequency diversity.</p> |
