Method and apparatus for space-time turbo-coded modulation

An apparatus for transmitting a signal from a plurality of antennas comprising:

• an outer encoder configured to encode a stream of data according to a turbo multiple trellis coded modulation scheme, thereby generating a plurality of channel-coded symbol streams;
• an inner encoder configured to receive the channel-coded symbol streams and provide space-time coding to the channel-coded symbol streams, thereby generating a plurality of space-time-channel-coded symbol streams;
• and
• a plurality of antennas coupled to the inner encoder, wherein each of the plurality of antennas is configured to transmit one of the plurality of space-time-channel-coded symbol streams.

An apparatus for transmitting a signal from a plurality of antennas comprising:

• channel encoding means for encoding a stream of data according to a turbo multiple trellis coded modulation scheme, wherein the channel encoding means is configured to generate a plurality of parallel channel-coded symbol streams;
• space-time encoding means for space-time coding the plurality of parallel channel-coded symbol streams, wherein the space-time encoding means is configured to generate a plurality of space-time-channel-coded symbol streams;
• and
• means for transmitting the plurality of space-time-channel-coded symbol streams from the plurality of antennas.

A method for communicating comprising:

• encoding a stream of data according to a turbo multiple trellis coded modulation scheme thereby generating a plurality of parallel channel-coded symbol streams;
• space-time encoding the plurality of parallel channel-coded symbol streams, thereby generating a plurality of space-time-channel-coded symbol streams;
• transmitting the plurality of space-time-channel-coded symbol streams from the plurality of antennas;
• receiving the plurality of space-time-channel-coded symbol streams;
• space-time decoding the plurality of received space-time-coded symbol streams, thereby generating a received channel-coded symbol stream;
• decoding the channel-coded symbol stream, thereby generating a received stream of data that corresponds to the stream of data.

A transceiver comprising:

• a transmitter portion including:
• an outer encoder configured to encode a stream of data according to a turbo multiple trellis coded modulation scheme, thereby generating a plurality of channel-coded symbol streams;
• an inner encoder configured to receive the channel-coded symbol streams and provide space-time coding to the channel-coded symbol streams, thereby generating a plurality of space-time-channel-coded symbol streams;
• a plurality of antennas coupled to the inner encoder, wherein each of the plurality of antennas is configured to transmit one of the plurality of space-time-channel-coded symbol streams;
• and
• a receiving portion housed with the transmitting portion, the receiving portion comprising:
• at least one antenna for receiving a plurality of transmitted space-time-channel-coded symbol streams, thereby generating a plurality of received space-time-channel-coded symbol streams;
• a space-time decoder coupled to the at least one antenna, wherein the space-time decoder is configured to decode the plurality of received space-time-channel-coded symbol streams, thereby generating at least one channel-coded symbol stream;
• and
• a channel decoder configured to decode the at least one channel coded symbol stream, thereby generating a stream of received data.

An apparatus for transmitting a signal comprising:

• a QPSK mapper configured to receive input data;
• a first MTCM encoder and QPSK mapper unit coupled to the QPSK mapper;
• a first symbol selector and puncturer coupled to the first MTCM encoder and QPSK mapper unit, wherein the first symbol selector and puncturer is configured to provide a first channel-coded symbol stream;
• a symbol interleaver coupled to the QPSK mapper;
• a second MTCM encoder and QPSK mapper unit coupled to the symbol interleaver;
• a symbol de-interweaver arrangement coupled to the second MTCM encoder and QPSK mapper unit;
• a second symbol selector and puncturer coupled to the symbol de-interweaver arrangement, wherein the second symbol selector and puncturer is configured to provide a second channel-coded symbol stream;
• an inner encoder coupled first and second symbol selector and puncturers, wherein the inner encoder is configured to receive the first and second channel-coded symbol streams and provide space-time coding to the first and second channel-coded symbol streams, thereby generating a first and a second space-time-channel-coded symbol streams;
• and
• a plurality of antennas coupled to the inner encoder, wherein two of the plurality of antennas are each configured to transmit one of the first and second space-time-channel-coded symbol streams.