Results 101 to 110 of about 6,965 (214)

Reduced Complexity I/Q Turbo Detection for Space-Time Trellis-Coded Systems [PDF]

open access: yes, 2004
A reduced-complexity turbo-detection scheme, referred to here as the R-TD arrangement, is proposed for employment in space-time trellis-coded (STTC) systems using the inphase/quadrature-phase (I/Q) cancellation technique that was previously developed for
Yeap, B.L., Hanzo, L.
core  

Efficient Computation of EXIT Functions for Nonbinary Iterative Decoding [PDF]

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  

Bit-Interleaved Sphere-Packing-Aided Iteratively Detected Space-Time Coded Modulation [PDF]

open access: yes, 2009
We design a bit-interleaved space-time coded modulation scheme using iterative decoding (BI-STCM-ID) combined with a new multidimensional mapping scheme invoking sphere-packing (SP) modulation, which we refer to as the space-time block-coded sphere ...
Tee, Ronald Y S   +3 more
core  

Joint Multilevel Turbo Equalization and Continuous Phase Frequency Shift Keying

open access: yesEURASIP Journal on Wireless Communications and Networking, 2008
A novel type of turbo coded modulation scheme, called multilevel turbo coded-continuous phase frequency shift keying (MLTC-CPFSK), is designed to improve the overall bit error rate (BER) and bandwidth efficiency. Then, this scheme is combined with a new
Odabasioglu Niyazi   +5 more
doaj  

Space-Time Block Coded Adaptive Modulation Aided OFDM [PDF]

open access: yes, 2001
Space-time block codes provide substantial diversity advantages for multiple transmit antenna systems at a low decoding complexity. In this contribution, we investigate the achievable diversity advantages in the context of adaptive modulation aided turbo
Liew, T.H., Hanzo, L.
core  

Joint blind and semi-blind detection and channel estimation for space-time trellis coded systems [PDF]

open access: yes, 2003
The paper considers a multiple-input multiple-output (MIMO) communication system, which uses space-time trellis coding (STTC). A novel method of decoding STTC without a need to transmit training sequences is developed.
Nix, AR   +3 more
core  

Codebook-Based Trellis-Coded Quantization Scheme Using K-Means Clustering for Massive MIMO Systems

open access: yesIEEE Access
This paper introduces a codebook-based trellis-coded quantization (TCQ) approach utilizing K-means clustering, designed specifically for massive multiple-input multiple-output systems.
Sungsoo Park, Gyuyeol Kong
doaj   +1 more source

Performance Evaluation of Parallel Concatenated Chaos Coded Modulations

open access: yesJournal of Communications Software and Systems, 2008
In this article we study the performance of a class of parallel concatenated encoders similar to a turbo trellis coded modulation, but where the constituent encoders are chaos coded modulators.
Francisco J. Escribano   +2 more
doaj  

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