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Space-Time Spreading Assisted Adaptive QAM Aided Multicarrier DS-CDMA Video Telephony

Space-Time Spreading Assisted Adaptive QAM Aided Multicarrier DS-CDMA Video Telephony
Space-Time Spreading Assisted Adaptive QAM Aided Multicarrier DS-CDMA Video Telephony
A Space-Time Spreading (STS) assisted near-instantaneously Adaptive Quadrature Amplitude Modulated (AQAM) Multicarrier CDMA (MC-DSCDMA) video transceiver is proposed and investigated. When the STS scheme is invoked for spreading the signal of each sub-carrier to multiple transmit antennas, the affects of channel-induced fading are substantially mitigated. Furthermore, turbo convolutional coding is invoked for enhancing the achievable BER versus SNR performance. The AQAM-aided STA MC_CDMA system was capable of maintaining a near-constant target BER and hence a near-constant video PSNR across a wide range of channel qualities, requiring a Signal-to-Noise Ratio (SNR) as low as 7dB for achieving an perceptually pleasing video quality.
148-152
Chung, J-Y.
b45579e9-41e6-4493-8d4a-0db2670a7d53
Wei, H.
c99f7f91-cfea-4292-8f88-6b184ff81446
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1
Chung, J-Y.
b45579e9-41e6-4493-8d4a-0db2670a7d53
Wei, H.
c99f7f91-cfea-4292-8f88-6b184ff81446
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1

Chung, J-Y., Wei, H. and Hanzo, L. (2004) Space-Time Spreading Assisted Adaptive QAM Aided Multicarrier DS-CDMA Video Telephony. Fifth International IEE Conference on 3G Mobile Communication Technologies, Savoy Place, London, United Kingdom. pp. 148-152 .

Record type: Conference or Workshop Item (Paper)

Abstract

A Space-Time Spreading (STS) assisted near-instantaneously Adaptive Quadrature Amplitude Modulated (AQAM) Multicarrier CDMA (MC-DSCDMA) video transceiver is proposed and investigated. When the STS scheme is invoked for spreading the signal of each sub-carrier to multiple transmit antennas, the affects of channel-induced fading are substantially mitigated. Furthermore, turbo convolutional coding is invoked for enhancing the achievable BER versus SNR performance. The AQAM-aided STA MC_CDMA system was capable of maintaining a near-constant target BER and hence a near-constant video PSNR across a wide range of channel qualities, requiring a Signal-to-Noise Ratio (SNR) as low as 7dB for achieving an perceptually pleasing video quality.

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More information

Published date: 2004
Additional Information: Event Dates: 18-20th October 2004
Venue - Dates: Fifth International IEE Conference on 3G Mobile Communication Technologies, Savoy Place, London, United Kingdom, 2004-10-20
Organisations: Southampton Wireless Group
Learn more about Southampton Wireless Group research

Identifiers

Local EPrints ID: 260320
URI: http://eprints.soton.ac.uk/id/eprint/260320
PURE UUID: 99cf60ff-c150-41ef-ace5-966b00df9035
ORCID for L. Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

Catalogue record

Date deposited: 20 Jan 2005
Last modified: 18 Mar 2024 02:33

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Contributors

Author: J-Y. Chung
Author: H. Wei
Author: L. Hanzo ORCID iD

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