Exact BER Performance of Asynchronous MC-DS-CDMA over Fading Channels
Exact BER Performance of Asynchronous MC-DS-CDMA over Fading Channels
In this contribution an accurate average Bit Error Rate (BER) formula is derived for MC-DS-CDMA in the context of asynchronous transmissions and random spreading sequences. We consider a flat Nakagami-m fading channel for each subcarrier. Our analysis is based on the Characteristic Function (CF) and does not rely on any assumption concerning the statistical behavior of the interference. We develop a new closed-form expression for the conditional CF of the inter-carrier interference and provide a procedure for calculating the exact BER expressed in the form of a single numerical integration. The accuracy of the Standard Gaussian Approximation (SGA) technique is also evaluated. Link-level results confirm the accuracy of the SGA for most practical conditions.
1249-1254
Smida, Besma
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Hanzo, Lajos
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Affes, Sofiene
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April 2010
Smida, Besma
aa020216-d0a2-4362-bc03-d75b7bea1f66
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Affes, Sofiene
1c090f1a-e8a5-44d9-911a-6cd81d15fca9
Smida, Besma, Hanzo, Lajos and Affes, Sofiene
(2010)
Exact BER Performance of Asynchronous MC-DS-CDMA over Fading Channels.
IEEE Transactions on Wireless Communications, 9, .
Abstract
In this contribution an accurate average Bit Error Rate (BER) formula is derived for MC-DS-CDMA in the context of asynchronous transmissions and random spreading sequences. We consider a flat Nakagami-m fading channel for each subcarrier. Our analysis is based on the Characteristic Function (CF) and does not rely on any assumption concerning the statistical behavior of the interference. We develop a new closed-form expression for the conditional CF of the inter-carrier interference and provide a procedure for calculating the exact BER expressed in the form of a single numerical integration. The accuracy of the Standard Gaussian Approximation (SGA) technique is also evaluated. Link-level results confirm the accuracy of the SGA for most practical conditions.
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Published date: April 2010
Organisations:
Southampton Wireless Group
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Local EPrints ID: 271779
URI: http://eprints.soton.ac.uk/id/eprint/271779
PURE UUID: 247e5907-89c2-4cab-98bc-9caa1bf1ec3c
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Date deposited: 13 Dec 2010 19:57
Last modified: 18 Mar 2024 02:34
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Author:
Besma Smida
Author:
Lajos Hanzo
Author:
Sofiene Affes
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