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Crest Factors of Complementary-Sequence-Based Multicode MC-CDMA Signals

Crest Factors of Complementary-Sequence-Based Multicode MC-CDMA Signals
Crest Factors of Complementary-Sequence-Based Multicode MC-CDMA Signals
The crest factor properties of binary phase-shift keying modulated two- and four-code assisted multicarrier code-division multiple-access (MC-CDMA) employing complementary-sequence-based spreading sequences are characterized. More specifically, a complementary-sequence pair, a complementary- sequence-based subcomplementary code pair, and a Sivaswamy’s complementary code set are studied. It was found that the corresponding crest factors are bounded by 3 dB, which corresponds to the crest factor of a single sine wave. This low crest factor resulted in a lower power loss and a lower out-of-band power spectrum due to clipping when the time-domain signal was subjected to a typical nonlinear power amplifier, in comparison to those ofWalsh code and orthogonal Gold code-spread MC-CDMA signals. Index Terms—Complementary set, crest factor (CF), Golay codes, multicarrier code-division multiple-access (MC-CDMA), Shapiro–Rudin sequence, subcomplementary set.
1114-1119
Choi, B.J.
e5e6cf6f-c5a9-4fa1-a038-81782918a1f9
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1
Choi, B.J.
e5e6cf6f-c5a9-4fa1-a038-81782918a1f9
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1

Choi, B.J. and Hanzo, L. (2003) Crest Factors of Complementary-Sequence-Based Multicode MC-CDMA Signals. IEEE Transactions on Wireless Communications, 2 (6), 1114-1119.

Record type: Article

Abstract

The crest factor properties of binary phase-shift keying modulated two- and four-code assisted multicarrier code-division multiple-access (MC-CDMA) employing complementary-sequence-based spreading sequences are characterized. More specifically, a complementary-sequence pair, a complementary- sequence-based subcomplementary code pair, and a Sivaswamy’s complementary code set are studied. It was found that the corresponding crest factors are bounded by 3 dB, which corresponds to the crest factor of a single sine wave. This low crest factor resulted in a lower power loss and a lower out-of-band power spectrum due to clipping when the time-domain signal was subjected to a typical nonlinear power amplifier, in comparison to those ofWalsh code and orthogonal Gold code-spread MC-CDMA signals. Index Terms—Complementary set, crest factor (CF), Golay codes, multicarrier code-division multiple-access (MC-CDMA), Shapiro–Rudin sequence, subcomplementary set.

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Published date: November 2003
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 258611
URI: http://eprints.soton.ac.uk/id/eprint/258611
PURE UUID: f6d3d947-f3a3-443b-815c-cae2434442b4
ORCID for L. Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

Catalogue record

Date deposited: 27 Nov 2003
Last modified: 05 Nov 2019 02:07

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Contributors

Author: B.J. Choi
Author: L. Hanzo ORCID iD

University divisions

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