Method and system of single carrier block transmission with parallel encoding and decoding
A Single Carrier Block Transmission (SCBT) system employs an inherently parallel approach to error correction processing. At the transmission system ( 200 ), an incoming data stream is split ( 210 ) into P parallel data streams, each having a data rate equal to a fraction of the incoming data stream's data rate. The parallel data streams are then each separately encoded ( 220 ) in P parallel encoding processes (beneficially, using P parallel encoders ( 222 )). The P separately encoded data streams are then merged ( 330 ), interleaved ( 320 ), and mapped ( 310 ) into a single stream of encoded symbols, which are transmitted to the receiver using an arbitrary modulation ( 240 ) and transmission scheme. At the receiver ( 255 ), the received data stream is de-interleaved ( 350 ) and split into P encoded data streams, which are then decoded ( 285 ) using P parallel decoders. Then, the decoded data streams are combined or multiplexed ( 295 ) into a single data stream.
1. A method of transmitting data, comprising:
dividing a set of data into a plurality of data streams;
separately encoding each of the data streams with a corresponding error correction code to produce a plurality of encoded data streams;
generating a single carrier block transmission (SCBT) signal from the plurality of encoded data streams; and
transmitting the SCBT signal.
2. The method of claim 1 , wherein generating a single carrier block transmission (SCBT) signal from the plurality of encoded data streams comprises:
generating a stream of modulated symbols from the plurality of encoded data streams; and
mapping the modulated symbols into SCBT blocks.
3. The method of claim 1 , wherein dividing a set of data into a plurality of data streams comprises dividing the set of data into the plurality of data streams wherein at least two of the data streams have different data rates than each other.
4. The method of claim 1 , wherein separately encoding each of the plurality of encoded data streams comprises encoding the data streams such that at least two of the encoded data streams are encoded with codes that are different than each other.
5. A wireless device, comprising:
a demultiplexer adapted to divide a set of data into a plurality of data streams;
an error correction encoding unit adapted to separately encode each of the data streams with a corresponding error correction code to produce a plurality of encoded data streams;
a transmission signal processor adapted to produce a plurality of symbols from the plurality of encoded data streams; and
a single carrier block transmission (SCBT) modulator adapted to produce an SCBT signal from the plurality of symbols.
6. The wireless device of claim 5 , wherein the transmission signal processor comprises:
a plurality of symbol mappers;
a plurality of interleavers each operatively connected to an output of one of the symbol mappers; and
a multiplexer operatively connected to outputs of the interleavers.
7. The wireless device of claim 5 , wherein the transmission signal processor comprises:
a plurality of symbol mappers;
a multiplexer operatively connected to outputs of the symbol mappers; and
an interleaver operatively connected to an output of the multiplexer.
8. The wireless device of claim 5 , wherein the transmission signal processor comprises:
a plurality of interleavers;
a multiplexer operatively connected to outputs of the interleavers; and
a symbol mapper operatively connected to an output of the multiplexer.
9. The wireless device of claim 5 , wherein the transmission signal processor comprises:
a plurality of interleavers;
a plurality of symbol mappers each operatively connected to an output of one of the interleavers; and
a multiplexer operatively connected to outputs of the symbol mappers.
10. The wireless device of claim 5 , wherein the transmission signal processor comprises:
a multiplexer;
an interleaver operatively connected to an output of the multiplexer; and
a symbol mapper operatively connected to an output of the interleaver.
11. The wireless device of claim 5 , wherein the transmission signal processor comprises:
a multiplexer;
a symbol mapper operatively connected to an output of the multiplexer; and
an interleaver operatively connected to an output of the symbol mapper.
12. A method of receiving data, comprising:
processing a single carrier block transmission (SCBT) signal to produce received symbols;
generating a plurality of encoded data streams from the received symbols;
separately decoding each of the encoded data streams to produce a plurality of decoded data streams; and
combining the decoded data streams.
13. The method of claim 12 , wherein generating a plurality of encoded data streams from the received symbols comprises generating at least two encoded data streams having different data rates than each other.
14. The method of claim 12 , wherein separately decoding each of the encoded data streams comprises decoding at least two encoded data streams that are encoded with codes that are different than each other.
15. A wireless device, comprising:
an SCBT demodulator adapted to demodulate a single carrier block transmission (SCBT) signal and to generate therefrom received symbols;
a receiver signal processor adapted to produce a plurality of encoded data streams from the received symbols;
a plurality of error correction decoders, each adapted to decode a corresponding one of the encoded data streams, to produce a plurality of decoded data streams; and
a multiplexer adapted to combine the decoded data streams.
16. The wireless device of claim 15 , wherein the receiver signal processor comprises:
a demultiplexer;
a plurality of deinterleavers operatively connected to outputs of the demultiplexer; and
a plurality of symbol demappers each operatively connected to an output of one of the deinterleavers.
17. The wireless device of claim 15 , wherein the receiver signal processor comprises:
a deinterleaver;
a demultiplexer operatively connected to an output of the deinterleaver; and
a plurality of symbol demappers each operatively connected to an output of the demultiplexer.
18. The wireless device of claim 15 , wherein the receiver signal processor comprises:
a symbol demapper;
a demultiplexer operatively connected to an output of the symbol demapper; and
a plurality of deinterleavers each operatively connected to an output of the demultiplexer.
19. The wireless device of claim 15 , wherein the receiver signal processor comprises:
a demultiplexer;
a plurality of symbol demappers operatively connected to outputs of the demultiplexer; and
a plurality of deinterleavers each operatively connected to an output of one of the symbol demappers.
20. The wireless device of claim 15 , wherein the receiver signal processor comprises:
a symbol demapper;
a deinterleaver operatively connected to an output of the symbol demapper; and
a demultiplexer operatively connected to an output of the deinterleaver.
21. The wireless device of claim 15 , wherein the receiver signal processor comprises:
a deinterleaver;
a symbol demapper operatively connected to an output of the deinterleaver; and
a demultiplexer operatively connected to an output of the symbol demapper.