Results 71 to 80 of about 574 (170)

Turbo-detected unequal protection audio and speech transceivers using serially concatenated convolutional codes, trellis coded modulation and space-time trellis coding

open access: yes, 2005
The MPEG-4 TwinVQ audio codec and the AMR-WB speech codec are investigated in the context of a jointly optimised turbo transceiver capable of providing unequal error protection.
Ng, S.X., Othman, N.S., Hanzo, L.
core  

Sphere-Packing Modulated Space-Time Coding Using Non-Binary LDPC-Coded Iterative-Detection

open access: yes, 2008
A recently proposed Space-Time Block Coding (STBC) 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. In
Alamri, Osamah   +9 more
core   +1 more source

EXIT-chart aided near-capacity irregular bit-interleaved coded modulation design [PDF]

open access: yes, 2009
A near-capacity irregular Bit-Interleaved Coded Modulation based Iterative Decoding (Ir-BICM-ID) aided scheme is proposed. The irregular design of the scheme pervades the three basic components of BICM-ID, namely the encoder, the unity-rate precoder and ...
Tee, Ronald Yee Siong   +2 more
core   +1 more source

Turbo Detection of Precoded Sphere Packing Modulation Using Four Transmit Antennas for Differential Space-Time Spreading [PDF]

open access: yes, 2008
This paper presents a novel turbo-detected multidimensional Sphere Packing (SP) modulation scheme using four transmit antennas combined with Differentially encoded Space-Time Spreading (DSTS). The DSTS scheme can be readily combined with PSK, QAM as well
Alamri, Osamah   +3 more
core   +1 more source

Concatenated Space Time Block Codes and TCM, Turbo TCM Convolutional as well as Turbo Codes

open access: yes, 2000
Space-time block codes provide substantial diversity advantages for multiple transmit antenna systems at a low decoding complexity. In this paper, we concatenate space-time codes with Convolutional Codes (CC), Turbo Convolutional codes (TC), Turbo BCH ...
Pliquett, J.   +4 more
core  

A Purely Symbol-Based Precoded and LDPC-Coded Iterative-Detection Assisted Sphere-Packing Modulated Space-Time Coding Scheme [PDF]

open access: yes, 2006
In this contribution, we propose a purely symbol-based LDPC-coded scheme based on a Space-Time Block Coding (STBC) signal construction method that combines orthogonal design with sphere packing, referred to here as (STBCSP).
F. Guo   +7 more
core   +1 more source

Channel Prediction Aided Coded Modulation Assisted Eigen-Beamforming

open access: yes, 2007
Eigen-beamforming is capable of providing attractive performance gains in the context of Multiple-Input Multiple-Output (MIMO) systems, provided that accurate Channel State Information (CSI) is available.
Ng, S.X.   +7 more
core   +1 more source

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