Performance analysis of LDPC codes with selection diversity combining over identical and non-identical rayleigh fading channels

Author

Tan, Beng Soon ; Li, Kwok Hung ; Teh, Kah Chan

Author_Institution

Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore, Singapore

Volume

14

Issue

4

fYear

2010

fDate

4/1/2010 12:00:00 AM

Firstpage

333

Lastpage

335

Abstract

Selection diversity combining employed in conjunction with low-density parity-check codes is able to mitigate the effects of fading. The closed-form bit-error rate expressions of this scheme over independent and non-identically distributed and independent and identically distributed flat Rayleigh fading channels are derived using the extrinsic information transfer chart and Gaussian approximation. The derived expressions are compared with simulation results as well as the E_b/N₀ threshold using density evolution (DE). They are in good agreement with simulation results and have the advantage of reduced computational complexity over DE.

Keywords

Rayleigh channels; diversity reception; error statistics; parity check codes; Gaussian approximation; LDPC codes; closed-form bit-error rate expressions; density evolution; extrinsic information transfer chart; non-identical Rayleigh fading channels; performance analysis; selection diversity; Bit error rate; Computational complexity; Computational modeling; Diversity reception; Fading; Gaussian approximation; Information analysis; Parity check codes; Performance analysis; Rayleigh channels; Gaussian approximation, low-density paritycheck codes, selection diversity combining;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2010.04.091819

Filename

5439356