A method and apparatus for increasing the data rate and providing antenna diversity
using multiple transmit antennas is disclosed. A set of bits of a digital signal
are used to generate a codeword. Codewords are provided according to a channel
code. Delay elements may be provided in antenna output channels, or with suitable
code construction delay may be omitted. n signals represent n symbols of a codeword
are transmitted with n different transmit antennas. At the receiver MLSE or other
decoding is used to decode the noisy received sequence. The parallel transmission
and channel coding enables an increase the data rate over previous techniques,
and recovery even under fading conditions. The channel coding may be concatenated
with error correction codes under appropriate conditions.
