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Comparative Study of Adaptive-Rate CDMA Transmission Employing Joint-Detection and Interference Cancellation Receivers

Comparative Study of Adaptive-Rate CDMA Transmission Employing Joint-Detection and Interference Cancellation Receivers
Comparative Study of Adaptive-Rate CDMA Transmission Employing Joint-Detection and Interference Cancellation Receivers
Spread Adaptive Quadrature Amplitude Modulation (AQAM) is proposed as a powerful means of exploiting the time variant channel capacity fluctuations of wireless channels and studied in comparison to the Variable Spreading Factor (VSF) method. These two adaptive rate transmission methods are compared in the context of join detection and interference cancellation assisted Adaptive Code Division Multiple Access (ACDMA) systems. More explicitly, these exploit the time-variant channel quality of mobile channels by switching either the modulation mode (AQAM) or the spreading factor (VSF) on a burst-by-burst basis. The most appropriate modulation mode or spreading factor is chosen based on the instantaneous channel quality estimated. The chosen AQAM mode of spreading factor is communicated to the remote receiver either through explicit signalling or extracted at the receiver using blind detection techniques. The multiuser Joint Detector (JD) and the Successive Interference Cancellation (SIC) receiver are compared in the context of these adaptive schemes with the conclusion that JD outperformed the SIC receiver in the ACDMA schemes, at the cost of increased complexity.
71-75
Kuan, E.L.
67ebe8dd-706a-4c9f-ba00-f38ff3da627f
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1
Kuan, E.L.
67ebe8dd-706a-4c9f-ba00-f38ff3da627f
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1

Kuan, E.L. and Hanzo, L. (2000) Comparative Study of Adaptive-Rate CDMA Transmission Employing Joint-Detection and Interference Cancellation Receivers. VTC'2000, Tokyo, Japan. 15 - 18 May 2000. pp. 71-75 .

Record type: Conference or Workshop Item (Paper)

Abstract

Spread Adaptive Quadrature Amplitude Modulation (AQAM) is proposed as a powerful means of exploiting the time variant channel capacity fluctuations of wireless channels and studied in comparison to the Variable Spreading Factor (VSF) method. These two adaptive rate transmission methods are compared in the context of join detection and interference cancellation assisted Adaptive Code Division Multiple Access (ACDMA) systems. More explicitly, these exploit the time-variant channel quality of mobile channels by switching either the modulation mode (AQAM) or the spreading factor (VSF) on a burst-by-burst basis. The most appropriate modulation mode or spreading factor is chosen based on the instantaneous channel quality estimated. The chosen AQAM mode of spreading factor is communicated to the remote receiver either through explicit signalling or extracted at the receiver using blind detection techniques. The multiuser Joint Detector (JD) and the Successive Interference Cancellation (SIC) receiver are compared in the context of these adaptive schemes with the conclusion that JD outperformed the SIC receiver in the ACDMA schemes, at the cost of increased complexity.

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More information

Published date: May 2000
Additional Information: Event Dates: 15-18 May 2000 Organisation: IEEE Address: Tokyo, Japan
Venue - Dates: VTC'2000, Tokyo, Japan, 2000-05-15 - 2000-05-18
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 257120
URI: http://eprints.soton.ac.uk/id/eprint/257120
PURE UUID: 6e8d02a2-1070-4d1c-a54d-7cdccae673e1
ORCID for L. Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

Catalogue record

Date deposited: 23 Jan 2004
Last modified: 26 Nov 2019 02:06

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