US 2004/0071223 A1 · Channel encoding/decoding method and multiple-antenna communication transmitting/receiving system performing the same

Abstract

A channel encoding/decoding method and a multiple-antenna wireless communication transmitting/receiving system performing the same are disclosed. A transmitter of the multiple-antenna wireless communication system comprises a space-time encoder, interleavers, a P/S converter, a RSC encoder, a S/P converter, and a modulator. A receiver of the multiple-antenna wireless communication system comprises a RSC decoder, deinterleavers, a space-time decoder, and interleavers. The frame error rates from the information transmission and reception by the present invention are found to be significantly lower than those by the multiple encoding/separated decoding method. Compared with the multiple encoding/joint decoding method, the present invention maintains comparable or better performance, while simplifying the decoding procedure considerably thereby it reduces the complexity in the hardware implementation.

Claims14

Dependent claims

A multiple-antenna wireless communication transmitting system having a plurality of transmitting antennas, comprising:

a space-time encoder for receiving information bits and outputting a plurality of the code symbols per input symbol;
interleavers for interleaving the plurality of the code symbols outputted from said space-time encoder;
a P/S converter for converting the plurality of the parallel symbols outputted from said interleavers into serial symbols;
a RSC encoder for encoding the serial symbols outputted from said P/S converter and outputting the code symbols;
a S/P converter for converting the serial code symbols outputted from said RSC encoder into a plurality of the parallel symbols;
and
a modulator for modulating the plurality of the parallel symbols outputted from said S/P converter and outputting the modulated signals to a plurality of the transmit antennas, each transmitting antenna corresponding to the respective modulated signal.

4 more elements

A multiple-antenna wireless communication receiving system having a plurality of receiving antennas, comprising:

a RSC decoder for computing the a posteriori probability distribution by using the signals received through the receiving antennas and the a priori probability for the input symbols of the RSC code outputted from interleavers, and extracting and outputting extrinsic informations from the computed probability distribution;
deinterleavers for deinterleaving the plurality of the extrinsic informations outputted from said RSC decoder;
a space-time decoder for computing the a posteriori probability distribution for the output of the space-time code by using the a priori probability distributions outputted from said deinterleavers, and extracting and outputting extrinsic information from the computed probability distribution;
and
interleavers for interleaving the plurality of the extrinsic informations outputted from said space-time decoder and outputting the interleaved signals to said RSC decoder, wherein after the feedback loop from said space-time decoder to said RSC decoder is iterated by a predetermined number, the probability distribution for the input bits of the outer code is computed to determine the values of the information bits in said space-time decoder.

2 more elements

A channel encoding and decoding method performed in a multiple-antenna wireless communication system, comprising the steps of

(a) space-time encoding input information bits;
(b) interleaving a plurality of the space-time encoded symbols;
(c) converting said interleaved parallel symbols into serial symbols;
(d) RSC encoding said serial symbols to RSC encoded symbols;
(e) converting said RSC code symbols into a plurality of the parallel symbols;
(f) after the plurality of the parallel symbols are modulated, transmitting the modulated signals through a plurality of the transmitting antennas each transmitting antenna corresponding to the respective modulated signal;
(g) RSC decoding to compute the a posteriori probability distribution for the input symbols of the RSC code by using signals received through a plurality of the receiving antennas;
(h) deinterleaving the RSC decoded extrinsic informations;
(i) performing space-time decoding by computing the a posteriori probability distribution for the output symbols of the space-time code by using the deinterleaved extrinsic informations as the a priori probability distribution for the output symbols of the space-time code;
(j) interleaving the space-time decoded extrinsic informations;
(k) RSC decoding to compute the a posteriori probability distribution for the input symbols of the RSC code by using said interleaved symbols as the a priori probability for the input symbols of the RSC code and by using the signals received through said plurality of the receiving antennas;
(l) performing steps of (h) to (i), and
(m) determining the values of the information bits by computing the probability distribution for input symbols of the space-time code.

10 more elements

Dependencies are inferred from the claim text.

Channel encoding/decoding method and multiple-antenna communication transmitting/receiving system performing the same

Life of this patent

Channel encoding/decoding method and multiple-antenna communication transmitting/receiving system performing the same

Life of this patent

Abstract

Claims14