Apparatus using concatenations of signal-space codes for jointly encoding across multiple transmit antennas, and employing coordinate interleaving

A method comprising:

• demodulating received data characterized by a concatenated and coordinate-interleaved structure, where the data has been received over multiple channels;
• passing the demodulated data through a first decoder to form an intermediate output;
• deinterleaving coordinates of the intermediate output to generate a plurality of streams of extrinsic information pertaining to the deinterleaved coordinates;
• inputting into each of a plurality of decoders a feedback stream from another of said plurality of decoders and at least one of said plurality of streams;
• and
• permuting said feedback streams, using a quasi-complementary turbo code interleaver, to derive compatible feedback signals,
• where a real coordinate and an imaginary coordinate for a complex symbol in the received data are received via different channels.

An apparatus comprising:

• a joint encoder comprising at least two constituent signal-space encoders, said joint encoder configured to encode input data over at least two pipes by concatenating outputs from the at least two constituent signal-space encoders, in which each said constituent encoder is used to generate, in response to said input data, a sequence of symbols from a channel alphabet having at least one dimension, each symbol of said channel alphabet comprising at least one complex symbol having real and imaginary coordinates;
• a coordinate interleaver having an input coupled to an output of the joint encoder configured to interleave the coordinates of said sequence of channel alphabet symbols;
• and
• a router having an input coupled to an output of the coordinate interleaver configured to distribute the interleaved coordinates from said sequence of channel alphabet symbols to at least two channels;
• where the coordinate interleaver is configured to at least one of puncture and repeat at least some of the sequence of symbols,
• where the real coordinate and imaginary coordinate for each complex symbol are transmitted via different channels.

An apparatus comprising:

• a demodulator configured to receive data characterized by a concatenated and coordinate-interleaved structure, where the data has been received over multiple channels;
• a serial decoder having as inputs an output of the demodulator and a serial feedback, said serial decoder configured to decode an inner code;
• at least two parallel decoders each having a first input coupled to an output of the serial decoder and a feedback input coupled to a feedback output of another parallel decoder, each parallel decoder operating to deinterleave coordinates of its respective first input and decode an outer code thereof, and each further comprising a second output;
• and
• a quasi-complementary turbo code calculating module having inputs coupled to each of the second outputs of the parallel decoders and an output coupled to the serial feedback of the serial decoder,
• where a real coordinate and an imaginary coordinate for a complex symbol in the received data are received via different channels.

An apparatus comprising:

• means for encoding and concatenating input data over at least two pipes by generating, from the input data, a sequence of channel alphabet symbols, each symbol comprising at least one complex symbol having real and imaginary coordinates;
• means for interleaving the coordinates of said sequence of symbols into codewords that each comprise a transmission frame and for at least one of puncturing and repeating at least some of the sequence of symbols;
• and
• means for transmitting the frames simultaneously using at least two channels,
• where the real coordinate and imaginary coordinate for each complex symbol are transmitted via different channels.

An apparatus comprising:

• means for receiving data over multiple channels, where the data is characterized by a concatenated and coordinate-interleaved structure;
• means for demodulating the received data;
• means for decoding an inner code of the demodulated received data using information about interleaved coordinates;
• means for deinterleaving coordinates that are output from the means for decoding an inner code;
• parallel means for decoding an outer code of the demodulated received data, each of said parallel means using a feedback from another of said parallel means for decoding an outer code;
• and
• means for determining extrinsic probabilities of an outer code of the received data from outputs of each of the parallel means and a quasi-complementary turbo code, said extrinsic probabilities provided as an output that is coupled to an input of the means for decoding an inner code,
• where a real coordinate and an imaginary coordinate for a complex symbol in the received data are received via different channels.

A non-transitory computer readable medium tangibly embodying computer readable instructions that are executed by a computer to perform actions comprising:

• encoding input data over at least two pipes by a concatenation of at least two constituent signal-space encoders, in which each constituent encoder is used to generate, in response to said input data, a sequence of symbols from a channel alphabet having at least one dimension, each symbol of said channel alphabet comprising at least one complex symbol having real and imaginary coordinates;
• interleaving the coordinates of said sequence of channel alphabet symbols into codewords that comprise transmission frames;
• at least one of puncturing and repeating at least some of the sequence of symbols resulting from concatenation and interleaving;
• and
• transmitting the frames using at least two channels,
• where the real coordinate and imaginary coordinate for each complex symbol are transmitted via different channels.