Results 91 to 100 of about 6,477 (204)

Space-Time Trellis and Space-Time Block Coding Versus Adaptive Modulation and Coding Aided OFDM for Wideband Channels

open access: yes, 2006
—The achievable performance of channel coded spacetime trellis (STT) codes and space-time block (STB) codes transmitted over wideband channels is studied in the context of schemes having an effective throughput of 2 bits/symbol (BPS) and 3 BPS.
Hanzo, L., Liew, T.H.
core   +1 more source

Experiment performance analysis of turbo code based turbo equalizer

open access: yesJournal of the Korea Institute of Information and Communication Engineering, 2015
In this paper, We analyzed the performance of turbo equalizer using turbo codes thorough the under water experiment. To compensate the distorted signal induced by multipath effect, we apply the iterative turbo codes that iteratively exchange probabilistic information between LMS-DFE and turbo decoder, thereby reducing the error rates significantly.
Gun-woong Park, Ji-won Jung
openaire   +2 more sources

A Low-Complexity Graph-Based LMMSE Receiver Designed for Colored Noise Induced by FTN-Signaling

open access: yes, 2014
We propose a low complexity graph-based linear minimum mean square error (LMMSE) equalizer which considers both the intersymbol interference (ISI) and the effect of non-white noise inherent in Faster-than-Nyquist (FTN) signaling.
Aktas, Tugcan   +2 more
core   +1 more source

MIMO-aided near-capacity turbo transceivers: taxonomy and performance versus complexity

open access: yes, 2012
In this treatise, we firstly review the associated Multiple-Input Multiple-Output (MIMO) system theory and review the family of hard-decision and soft-decision based detection algorithms in the context of Spatial Division Multiplexing (SDM) systems.
Chen, Sheng   +2 more
core   +1 more source

Filter-based turbo equalization for TCM signals

open access: yesGLOBECOM '05. IEEE Global Telecommunications Conference, 2005., 2005
In this paper, we presents a novel method of turbo equalization and decoding multi-level trellis coded modulation (TCM) signals over frequency selective channels. Results show that the proposed algorithm achieves better performance with reduced complexity compared to previous work on the MMSE filter-based turbo equalization for non-binary coded ...
Xiao, P, Carrasco, R, Wassell, I
openaire   +3 more sources

Turbo-ICL: In-Context Learning-Based Turbo Equalization

open access: yes
This paper introduces a novel in-context learning (ICL) framework, inspired by large language models (LLMs), for soft-input soft-output channel equalization in coded multiple-input multiple-output (MIMO) systems. The proposed approach learns to infer posterior symbol distributions directly from a prompt of pilot signals and decoder feedback.
Song, Zihang   +3 more
openaire   +2 more sources

Iterative Decoding of Concatenated Codes: A Tutorial

open access: yesEURASIP Journal on Advances in Signal Processing, 2005
The turbo decoding algorithm of a decade ago constituted a milestone in error-correction coding for digital communications, and has inspired extensions to generalized receiver topologies, including turbo equalization, turbo synchronization, and turbo ...
Phillip A. Regalia
doaj   +1 more source

Graph-Based Channel Detection for Multitrack Recording Channels

open access: yesEURASIP Journal on Advances in Signal Processing, 2009
We propose a low complexity detection technique for multihead multitrack recording systems. By exploiting sparseness of two-dimensional partial response (PR) channels, we develop an algorithm which performs belief propagation (BP) over corresponding ...
doaj   +1 more source

2D IMAGE TRANSMISSION USING KALMAN-TURBO SYSTEMS

open access: yesElectrica, 2005
In this paper, in order to compress and enhance 2D images transmitted over wireless channels, a new scheme called Kalman-Turbo (KT) is introduced. In this scheme, the original image is partitioned into 2N quantization levels and each of the N-bit planes ...
Niyazi ODABASIOGLU   +2 more
doaj   +2 more sources

Successive DF relaying: MS-DIS aided interference suppression and three-stage concatenated architecture design

open access: yes, 2012
Conventional single-relay aided two-phase cooperative networks employing coherent detection algorithms incur a significant 50% throughput loss. Furthermore, it is unrealistic to expect that in addition to the task of relaying, the relay-station would ...
Hanzo, Lajos, Li, Li, Wang, Li
core   +1 more source

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