COMBINED CHANNEL CODING AND SPACE-TIME BLOCK CODING IN A MULTI-ANTENNA ARRANGEMENT

摘要

Enhanced performance is achieved by combining channel coding with the space- time coding principles. With K synchronized terminal units transmitting on N antennas to a base station having M $m(G K) receive antennas, increased system capacity and improved performance are attained by using a concatenated coding scheme where the inn er code is a space-time block code and the outer code is a conventional channel error correcting code. Information symbols are first encoded using a conventional channel code, and the resulting signals are encoded using a space-time block code. At the receiver, the inne r space-time block code is used to suppress interference from the other co-channel terminals and soft decisions are made about the transmitted symbols. The channel decoding that follows makes the hard decisions about the transmitted symbols. Increased data rate is achieve d by, effectively, splitting the incoming data rate into multiple channels, and each channel is transmitted over its own terminal.