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.

Download

[img] PDF 02-04-03.PDF - Other
Download (195kB)

Description/Abstract

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.

Item Type: Conference or Workshop Item (Paper)
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
ePrint ID: 264951
Date :
Date Event
30 September 2007Published
Date Deposited: 12 Dec 2007 14:40
Last Modified: 17 Apr 2017 19:28
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/264951

Actions (login required)

View Item View Item