Performance of spread OFDM with LDPC coding in outdoor environments

Author

Serener, Ali ; Natarajan, Balasubramaniam ; Gruenbacher, Don M.

Author_Institution

Dept. of Electr. & Comput. Eng., Kansas State Univ., Manhattan, KS, USA

Volume

1

fYear

2003

fDate

6-9 Oct. 2003

Firstpage

318

Abstract

The performance of OFDM systems that utilize coding and spreading is presented. The proposed systems operate in outdoor environments and achieve coding gains through the use of low-density parity-check (LDPC) encoding. It is shown that by introducing Hadamard-Walsh spreading in coded OFDM, additional gain in performance can be attained relative to uncoded as well as LDPC coded OFDM systems. Comparable systems using convolutional codes are shown to have similar performance, although the OFDM system require additional interleaving and deinterleaving.

Keywords

OFDM modulation; convolutional codes; diversity reception; fading channels; interleaved codes; modulation coding; parity check codes; Hadamard-Walsh spreading; LDPC coding; coded OFDM; convolutional codes; deinterleaving; diversity; fading channels; interleaving; low-density parity-check coding; outdoor environments; spread OFDM; wireless applications; Convolutional codes; Error correction; Error correction codes; Fading; Interleaved codes; OFDM modulation; Parity check codes; Performance analysis; Performance gain; System performance;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2003. VTC 2003-Fall. 2003 IEEE 58th

ISSN

1090-3038

Print_ISBN

0-7803-7954-3

Type

conf

DOI

10.1109/VETECF.2003.1285031

Filename

1285031