Soft-Bit Assisted Iterative AMR-WB Source-Decoding and Turbo-Detection of Channel-Coded Differential Space-Time Spreading Using Sphere Packing Modulation


Othman, N.S., El-Hajjar, M., Alamri, O. and Hanzo, L. (2007) Soft-Bit Assisted Iterative AMR-WB Source-Decoding and Turbo-Detection of Channel-Coded Differential Space-Time Spreading Using Sphere Packing Modulation At IEEE VTC'07 (Spring). 22 - 25 Apr 2007. , pp. 2010-2014.

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Description/Abstract

Jointly optimised iterative source- and channel-decoding is used for enhancing the error resilience of the Adaptive Multi Rate WideBand (AMR-WB) speech codec. The resultant AMR-WB coded speech signal is protected by Recursive Systematic Convolutional (RSC) codes and transmitted using a Sphere Packing (SP) aided Differential Space-Time Spreading (DSTS) assisted transceiver. The performance of the proposed scheme is evaluated when communicating over correlated non-dispersive Rayleigh fading channels. The proposed system exhibits an Eb/N0 gain of about 1 dB in comparison to the benchmark scheme carrying out joint channel decoding and DSTS aided SP-demodulation, but separate AMR-WB decoding, when using I = 4 external iterations.

Item Type: Conference or Workshop Item (Paper)
Additional Information: Event Dates: 22-25 April 2007
Venue - Dates: IEEE VTC'07 (Spring), 2007-04-22 - 2007-04-25
Organisations: Southampton Wireless Group
ePrint ID: 263935
Date :
Date Event
April 2007Published
Date Deposited: 25 Apr 2007
Last Modified: 17 Apr 2017 19:45
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/263935

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