On the Performance of Band-Limited Asynchronous DS-CDMA over Nakagami-m Channels
On the Performance of Band-Limited Asynchronous DS-CDMA over Nakagami-m Channels
In this paper we investigated the BER performance of DS-CDMA using various chip-waveforms, which include three time-limited chip-waveforms and two band-limited chipwaveforms. Closed-form formulae were derived for evaluating the achievable bit-error rate performance with the aid of the standard Gaussian approximation, when communicating over a Nakagami-m channel. The time-limited waveforms impose a low implementational complexity, since they maybe oversampled and read from a look-up table. However, they are outperformed by the frequency-domain raised-cosine waveform as well as the optimum waveform specifically designed by Cho and Lehnert for achieving the lowest possible bit error rate. Index Terms—Code-division multiple-access, chip waveform, Gaussian approximation, Nakagami, band-limited, normalized bandwidth.
1586-1593
Wei, H.
c99f7f91-cfea-4292-8f88-6b184ff81446
Yang, L-L.
ae425648-d9a3-4b7d-8abd-b3cfea375bc7
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1
July 2006
Wei, H.
c99f7f91-cfea-4292-8f88-6b184ff81446
Yang, L-L.
ae425648-d9a3-4b7d-8abd-b3cfea375bc7
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1
Wei, H., Yang, L-L. and Hanzo, L.
(2006)
On the Performance of Band-Limited Asynchronous DS-CDMA over Nakagami-m Channels.
IEEE Transactions on Wireless Communications, 5 (7), .
Abstract
In this paper we investigated the BER performance of DS-CDMA using various chip-waveforms, which include three time-limited chip-waveforms and two band-limited chipwaveforms. Closed-form formulae were derived for evaluating the achievable bit-error rate performance with the aid of the standard Gaussian approximation, when communicating over a Nakagami-m channel. The time-limited waveforms impose a low implementational complexity, since they maybe oversampled and read from a look-up table. However, they are outperformed by the frequency-domain raised-cosine waveform as well as the optimum waveform specifically designed by Cho and Lehnert for achieving the lowest possible bit error rate. Index Terms—Code-division multiple-access, chip waveform, Gaussian approximation, Nakagami, band-limited, normalized bandwidth.
More information
Published date: July 2006
Organisations:
Southampton Wireless Group
Identifiers
Local EPrints ID: 262974
URI: http://eprints.soton.ac.uk/id/eprint/262974
PURE UUID: 6abacb45-19fe-477e-8ba0-a16cbef0289a
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Date deposited: 18 Sep 2006
Last modified: 18 Mar 2024 02:49
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Contributors
Author:
H. Wei
Author:
L-L. Yang
Author:
L. Hanzo
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