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Downlink Steered Space-Time Spreading Assisted Generalised Multicarrier DS-CDMA Using Sphere-Packing-Aided Multilevel Coding

El-Hajjar, M, Tee, R, Hu, B, Yang, L-L and Hanzo, L (2007) Downlink Steered Space-Time Spreading Assisted Generalised Multicarrier DS-CDMA Using Sphere-Packing-Aided Multilevel Coding At IEEE VTC'07 (Fall), United States. 30 Sep - 03 Oct 2007. , pp. 472-476.

Record type: Conference or Workshop Item (Paper)


This paper presents a novel generalised Multi-Carrier Direct Sequence Code Division Multiple Access (MC DS-CDMA) system invoking smart antennas for improving the achievable performance in the downlink, as well as employing multi-dimensional Sphere Packing (SP) modulation for increasing the achievable diversity product. In this contribution, the MC DS-CDMA transmitter considered employs multiple Antenna Arrays (AA) and each of the AAs consists of several antenna elements. Furthermore, the proposed system employs both time- and frequency- (TF) domain spreading for extending the achievable capacity, when combined with a novel user-grouping technique for reducing the effects of Multiuser Interference (MUI). Moreover, in order to further enhance the system’s performance, we invoke a MultiLevel Coding (MLC) scheme, whose component codes are determined using the so-called equivalent capacity based constituent-code rate-calculation procedure invoking a 4-dimensional bit-to-SP-symbol mapping scheme. Our results demonstrate an approximately 3.8 dB Eb/N0 gain over an identical throughput scheme dispensing with SP modulation at a BER of 10?5.

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Published date: 30 September 2007
Additional Information: Event Dates: 30 September - 3 October 2007
Venue - Dates: IEEE VTC'07 (Fall), United States, 2007-09-30 - 2007-10-03
Organisations: Southampton Wireless Group


Local EPrints ID: 264951
PURE UUID: d2364593-36a1-4733-bdf7-80e6b4b77e54
ORCID for M El-Hajjar: ORCID iD
ORCID for L-L Yang: ORCID iD

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Date deposited: 12 Dec 2007 14:40
Last modified: 18 Jul 2017 07:30

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Author: M El-Hajjar ORCID iD
Author: R Tee
Author: B Hu
Author: L-L Yang ORCID iD
Author: L Hanzo

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