Results 91 to 100 of about 167,787 (204)

A Turbo Detection and Sphere-Packing-Modulation-Aided Space-Time Coding Scheme

open access: yes, 2007
A recently proposed space-time block-coding (STBC) signal-construction method that combines orthogonal design with sphere packing (SP), referred to here as STBC-SP, has shown useful performance improvements over Alamouti’s conventional orthogonal design.
YEAP, B-J., Hanzo, L, Alamri, O
core   +1 more source

Efficient Selection of Circular and Random Interleaver for Turbo Codes Multiuser CDMA System with Hadamard Spreading code in AWGN and Rayleigh Fading Channels

open access: yesJournal of Engineering and Sustainable Development, 2012
Recently, turbo codes have attracted many researchers because of the codes astonishing performance at low signal to noise ratio SNR. The interleaver types and lengths is an important part in the design of a turbo code.
Ghanim Abd AL Kareem
doaj  

Near-Capacity Turbo Trellis Coded Modulation Design

open access: yes, 2007
Bandwidth efficient parallel-concatenated Turbo Trellis Coded Modulation (TTCM) schemes were designed for communicating over uncorrelated Rayleigh fading channels.
Alamri, Osamah   +7 more
core   +1 more source

Efficient Computation of EXIT Functions for Nonbinary Iterative Decoding

open access: yes, 2006
The calculation of nonbinary extrinsic information transfer charts for the iterative decoding of concatenated index-based codes is addressed. We show that the extrinsic information at the output of a constituent a posteriori probability decoder can be ...
Ng, S.X, Kliewer, Jorg, Hanzo, L
core   +1 more source

A Differential Turbo Detection Aided Sphere Packing Modulated Space-Time Coding Scheme

open access: yes, 2006
A signal construction method that combines orthogonal design with sphere packing has recently shown useful performance improvements over the conventional orthogonal design.
Alamri, O., Wu, N., Hanzo, L.
core   +1 more source

Burst-by-Burst Adaptive Turbo-Coded Radial Basis Function-Assisted Decision Feedback Equalization

open access: yes, 2001
The performance of the proposed radial basis function (RBF) assisted turbo-coded adaptive modulation scheme is characterized in a wideband channel scenario.
Liew, T.H., Yee, M.S., Hanzo, L.
core   +1 more source

PERFORMANCE EVALUATION OF TURBO CODE ENDCODING AND DECODING

open access: yesAl-Qadisiyah Journal for Engineering Science, 2011
Channel coding is very important for secure communication. The most widely used communication coding is turbo coding technique, which is very secure technique. We deal in this paper with turbo code which is new class of convolutional codes.
Yahya Jasim Harbi
doaj  

Turbo Detection of Channel-Coded Space-Time Signals Using Sphere Packing Modulation

open access: yes, 2004
A recently proposed space-time signal construction method that combines orthogonal design with sphere packing, referred to here as (STBC-SP), has shown useful performance improvements over Alamouti’s conventional orthogonal design.
Alamri, O., Yeap, B.L., Hanzo, L.
core   +1 more source

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