Results 151 to 160 of about 166,124 (208)

Turbo Equalization Scheme for Polar-AFDM System

2024 16th International Conference on Communication Software and Networks (ICCSN)
In the next generation of mobile communication, robustness in high mobility scenarios is an important indicator. Affine Frequency Division Multiplexing (AFDM) is a potential powerful candidate waveform due to its high tolerance for DelayDoppler channels.
Xinhao Qu, Xiaohong Shen, Haiyan Wang, Xiangxiang Li   +3 more
semanticscholar   +1 more source

Two-Dimensional ICI-ISI Turbo Equalization for Doubly-Dispersive High-Spread Channels

ICC 2024 - IEEE International Conference on Communications
We present an iterative equalization scheme that accounts for both inter-carrier interference (ICI) and inter-symbol interference (ISI) on multicarrier communication systems without a cyclic prefix (CP).
Jorge A. Pires, B. Belzer, K. Sivakumar, Thomas R. Fischer   +3 more
semanticscholar   +1 more source

Hardware Implementation of Single-carrier Time-domain Turbo Equalization for Severe Multipath Acoustic Communication Channels

Global Oceans 2020: Singapore – U.S. Gulf Coast, 2020
This paper proposes a low-latency FPGA implementation for Turbo equalization to combat very long multipath fading channels where the Intersymbol-interference (ISI) channel length is on the order of 100 taps.
Jinfeng Li, Y. R. Zheng
semanticscholar   +1 more source

A Low-Complexity Scheduling for Turbo Equalization with Turbo Decoding

2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring, 2007
A novel scheduling for turbo equalization with turbo decoding is proposed. The use of turbo codes associated to turbo equalizers has been frequently investigated in the literature. The conventional turbo equalizer with turbo decoding consists of a soft input soft output equalizer cooperating with a turbo decoder. In this way, the turbo decoder performs
André Fonseca dos Santos, Wolfgang Rave, Gerhard P. Fettweis   +2 more
openaire   +1 more source

A Low Complexity Turbo Equalizer

2005
In this paper a new Soft Input – Soft Output (SISO) equalizer of linear complexity is developed. The algorithm can be used in the so-called Turbo Equalization scheme as a low cost solution in place of the Maximum A-Posteriori (MAP) equalization algorithm which has a prohibitive complexity for most real world applications.
Dimitris Ampeliotis, Kostas Berberidis
openaire   +1 more source

Modification of turbo equalization with LMMSE equalizer

SPIE Proceedings, 2004
This paper investigates turbo equalization (TE) with linear minimum mean squared error (LMMSE) equalizer, which has much lower complexity but much worse performance than TE with maximum a posteriori (MAP) equalizer because of inefficient information processing of LMMSE equalizer.
Sen Jiang, Yong-Qiang Zhang, Hong Sun, Ping Li   +3 more
openaire   +1 more source

Sparse MAP equalizers for turbo equalizations

2005 IEEE 61st Vehicular Technology Conference, 2005
The turbo equalization scheme provides nearly optimal performance, but when it is employed in sparse multipath channel environments, the equalizer complexity can prohibit its use. In this paper, we develop a parallel trellis n-tap soft-input soft-output maximum a posteriori (MAP) equalizer which can consider n dominant taps of sparse channels with ...
J. Park, S.B. Gelfand
openaire   +1 more source

Turbo equalization with Jointly Gaussian equalizer

Journal of Electronics (China), 2005
A Jointly Gaussian (JG) equalizer is derived for turbo equalization based on an augmented real matrix representation of channel model and a Gaussian approximation of the received symbol sequence. Using matrix inversion lemma and Cholesky decomposition, a low-complexity implementation of JG equalizer is also presented.
Sen Jiang, Hong Sun, Ping Li
openaire   +1 more source

Enhanced MIMO LMMSE Turbo Equalization

2010 IEEE 72nd Vehicular Technology Conference - Fall, 2010
We propose an enhanced linear minimum mean square error (LMMSE) turbo equalization scheme for multipleinput multiple-output (MIMO) communication systems. The turbo equalizer employs soft interference cancellation (SIC), where tentative soft decisions of the interfering symbols are subtracted from the received samples before the LMMSE filtering.
Jun Tao 0004, Jingxian Wu 0001, Yahong Rosa Zheng, Chengshan Xiao   +3 more
openaire   +1 more source

A linear log-MAP algorithm for turbo decoding and turbo equalization

WiMob'2005), IEEE International Conference on Wireless And Mobile Computing, Networking And Communications, 2005., 2006
A simplification of the log-MAP algorithm for use in turbo decoders and turbo equalizers is presented. The simplified algorithm is based on the MacLaurin series expansion of the logarithmic term in the Jacobian logarithmic function used in the log-MAP algorithm.
Shahram Talakoub, Leila Sabeti, Behnam Shahrrava, Majid Ahmadi   +3 more
openaire   +1 more source