Title :
Over-Complete Source-Mapping Aided AMR-WB MIMO Transceiver Using Three-Stage Interative Detection
Author :
Othman, N.S. ; El-Hajjar, M. ; Pham, A.Q. ; Alamri, O. ; Ng, S.X. ; Hanzo, L.
Author_Institution :
Sch. of ECS, Univ. of Southampton, Southampton
Abstract :
In this paper we propose an iteratively detected Sphere Packing (SP) aided Differential Space-Time Spreading (DSTS) scheme using a Recursive Systematic Convolutional (RSC) code, for protecting the soft-bit assisted Adaptive Multi Rate Wideband (AMR-WB) decoder´s bitstream, which is also protected by a novel over-complete source-mapping scheme. The convergence behaviour of the Multiple-Input Multiple-Output (MIMO) transceiver advocated is investigated with the aid of both three- dimensional (3D) and two-dimensional (2D) Extrinsic Information Transfer (EXIT) charts. The proposed system exhibits an Eb/No gain of about 2.5 dB in comparison to the benchmark scheme carrying out iterative source- and channel-decoding as well as DSTS aided SP-demodulation, but dispensing with the over-complete source-mapping, when using Isystem = 3 system iterations.
Keywords :
MIMO communication; adaptive codes; broadband networks; channel coding; convolutional codes; iterative decoding; space-time codes; transceivers; AMR-WB MIMO transceiver; EXIT chart; adaptive multi rate wideband decoder bitstream; channel decoding; differential space-time spreading scheme; extrinsic information transfer chart; iterative detection sphere packing; iterative source decoding; multiple-input multiple-output transceiver; over-complete source-mapping scheme; recursive systematic convolutional code; Channel coding; Convolution; Convolutional codes; Employment; Iterative decoding; MIMO; Protection; Redundancy; Speech codecs; Transceivers;
Conference_Titel :
Communications, 2008. ICC '08. IEEE International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-2075-9
Electronic_ISBN :
978-1-4244-2075-9
DOI :
10.1109/ICC.2008.147
