Iterative H.264 Source and Channel Decoding Using Sphere Packing Modulation Aided Layered Steered Space-Time Codes
Iterative H.264 Source and Channel Decoding Using Sphere Packing Modulation Aided Layered Steered Space-Time Codes
The conventional two-stage turbo-detection schemes generally suffer from a Bit Error Rate (BER) floor. In this paper we circumvent this deficiency by proposing a three-stage turbo detected Sphere Packing (SP) modulation aided Layered Steered Space-Time Coding (LSSTC) scheme for H.264 coded video transmission over correlated Rayleigh fading channels. The soft-bit assisted H.264 coded bit-stream is protected using low-complexity short-block codes (SBCs), combined with a rate-1 recursive inner precoder is employed as an intermediate code which has an infinite impulse response and hence beneficially spreads the extrinsic information across the constituent decoders. This allows us to avoid having a BER floor. Additionally, the convergence behaviour of this serially concatenated scheme is investigated with the aid of Extrinsic Information Transfer (EXIT) Charts. The proposed system exhibits an Eb/N0 gain of about 12 dB in comparison to the benchmark scheme carrying out iterative source-channel decoding as well as Layered Steered Space-Time Coding (LSSTC) aided Sphere Packing (SP)demodulation, but dispensing with the optimised SBCs.
Minallah, Nasru
d94728d6-d2a8-4951-9ec5-719d1d82bfe1
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
May 2010
Minallah, Nasru
d94728d6-d2a8-4951-9ec5-719d1d82bfe1
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Minallah, Nasru and Hanzo, Lajos
(2010)
Iterative H.264 Source and Channel Decoding Using Sphere Packing Modulation Aided Layered Steered Space-Time Codes.
ICC 2010, Cape Town, South Africa.
23 - 27 May 2010.
(doi:10.1109/ICC.2010.5501916).
Record type:
Conference or Workshop Item
(Paper)
Abstract
The conventional two-stage turbo-detection schemes generally suffer from a Bit Error Rate (BER) floor. In this paper we circumvent this deficiency by proposing a three-stage turbo detected Sphere Packing (SP) modulation aided Layered Steered Space-Time Coding (LSSTC) scheme for H.264 coded video transmission over correlated Rayleigh fading channels. The soft-bit assisted H.264 coded bit-stream is protected using low-complexity short-block codes (SBCs), combined with a rate-1 recursive inner precoder is employed as an intermediate code which has an infinite impulse response and hence beneficially spreads the extrinsic information across the constituent decoders. This allows us to avoid having a BER floor. Additionally, the convergence behaviour of this serially concatenated scheme is investigated with the aid of Extrinsic Information Transfer (EXIT) Charts. The proposed system exhibits an Eb/N0 gain of about 12 dB in comparison to the benchmark scheme carrying out iterative source-channel decoding as well as Layered Steered Space-Time Coding (LSSTC) aided Sphere Packing (SP)demodulation, but dispensing with the optimised SBCs.
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Published date: May 2010
Venue - Dates:
ICC 2010, Cape Town, South Africa, 2010-05-23 - 2010-05-27
Organisations:
Southampton Wireless Group
Identifiers
Local EPrints ID: 271209
URI: http://eprints.soton.ac.uk/id/eprint/271209
PURE UUID: f2896ab3-b6f2-4ac8-89f6-2c23651f3782
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Date deposited: 31 May 2010 18:48
Last modified: 18 Mar 2024 02:34
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Contributors
Author:
Nasru Minallah
Author:
Lajos Hanzo
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