Performance of spread OFDM with LDPC coding in outdoor environments

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, additiona...

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Bibliographic Details
Published in2003 IEEE 58th Vehicular Technology Conference. VTC 2003-Fall (IEEE Cat. No.03CH37484) Vol. 1; pp. 318 - 321 Vol.1
Main Authors Serener, A., Natarajan, B., Gruenbacher, D.M.
Format Conference Proceeding
LanguageEnglish
Published IEEE 2003
Subjects
Convolutional codes
Error correction
Error correction codes
Fading
Interleaved codes
OFDM modulation
Parity check codes
Performance analysis
Performance gain
System performance
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Summary: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.
ISBN:0780379543
9780780379541
ISSN:1090-3038
2577-2465
DOI:10.1109/VETECF.2003.1285031