6533b83afe1ef96bd12a7bf6

RESEARCH PRODUCT

Diagonal space time hadamard codes with erasure decoding algorithm

P. LusinaDomenico GiustinianoG. Garbo

subject

Prefix codeBlock codePolynomial codeComputer scienceConcatenationList decodingData_CODINGANDINFORMATIONTHEORYSequential decodingLocally testable codeSystematic codeReed–Solomon error correctionHadamard transformCyclic codeFadingLow-density parity-check codeComputer Science::Information TheorySelf-synchronizing codeHadamard codeConcatenated error correction codeReed–Muller codeSerial concatenated convolutional codesAntenna diversityLinear codeConvolutional codeErasureConstant-weight codeErasure codeAlgorithmDecoding methodsCommunication channel

description

A major challenge in the area of space time (ST) codes is to find codes suitable for efficient decoding, thus overcoming the problem of many existing ST code designs which require maximum-likelihood (ML) decoding. A solution could be to apply single-input single-output (SISO) channel codes and theory over temporal channel fading to the multi-input single-output (MISO) code construction and classical suboptimum decoding methods. For these purposes, an ST code construction which allows the use of efficient decoding algorithms is described. We propose a concatenated code, where the inner code is the diagonal ST Hadamard (D-STH) code with Paley constructions and the outer code is an algebraic block code, such as a Reed-Solomon (RS) code. As a decoding method, we investigate a bounded minimum distance (BMD) with erasure decoding algorithm. A simple method to achieve the optimum threshold for deciding on an erased symbol is derived. Using this, the proposed concatenated scheme is able to exploit almost all of the spatial diversity of the system.

yearjournalcountryeditionlanguage
2005-04-25IEEE Wireless Communications and Networking Conference, 2005
https://doi.org/10.1109/wcnc.2005.1424543