Results 31 to 40 of about 892,691 (234)

Code diversity in multiple antenna wireless communication

open access: yes, 2008
The standard approach to the design of individual space-time codes is based on optimizing diversity and coding gains. This geometric approach leads to remarkable examples, such as perfect space-time block codes, for which the complexity of Maximum ...
Calderbank, Robert, Wu, Yiyue
core   +1 more source

Full-diversity design criterion for multi-user STBC based on integer-forcing detection

open access: yesTongxin xuebao, 2019
Multi-user space time block code systems have the problem of high decoding complexity.To ensure good system performance with low decoding complexity at the same time,low complexity integer-forcing (IF) detection algorithm was applied to multi-user space ...
Guoquan LI   +5 more
doaj   +2 more sources

An Efficient Differential MIMO-OFDM Scheme with Coordinate Interleaving

open access: yesEURASIP Journal on Wireless Communications and Networking, 2007
We propose a concatenated trellis code (TC) and coordinate interleaved differential space-time block code (STBC) for OFDM. The coordinate interleaver, provides signal space diversity and improves the codeword error rate (CER) performance of the system in
Kenan Aksoy   +1 more
doaj   +1 more source

Geometrical relations between space time block code designs and complexity reduction

open access: yes, 2006
In this work, the geometric relation between space time block code design for the coherent channel and its non-coherent counterpart is exploited to get an analogue of the information theoretic inequality $I(X;S)\le I((X,H);S)$ in terms of diversity.
Henkel, Oliver
core   +1 more source

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

Differential Space-Time Block Code Modulation for DS-CDMA Systems

open access: yesEURASIP Journal on Advances in Signal Processing, 2002
A differential space-time block code (DSTBC) modulation scheme is used to improve the performance of DS-CDMA systems in fast time-dispersive fading channels. The resulting scheme is referred to as the differential space-time block code modulation for DS-
Liu Jianhua, Li Jian, Larsson Erik G
doaj   +1 more source

Experimental Evaluation of MIMO-OFDM System with Rateless Space-Time Block Code

open access: yesInternational Journal of Antennas and Propagation, 2019
Multiple-input multiple-output (MIMO) wireless technology in combination with orthogonal frequency-division multiplexing (MIMO-OFDM) is an attractive technique for next-generation wireless systems.
Ali H. Alqahtani   +3 more
doaj   +1 more source

Fast-decodable MIDO codes from non-associative algebras [PDF]

open access: yes, 2015
By defining a multiplication on a direct sum of n copies of a given cyclic division algebra, we obtain new unital non-associative algebras. We employ their left multiplication to construct rate-n and rate-2 fully diverse fast ML-decodable space-time ...
Pumpluen, Susanne, Steele, Andrew
core   +2 more sources

Automatic Space-Time Block Code Recognition Using Convolutional Neural Network With Multi-Delay Features Fusion

open access: yesIEEE Access, 2021
Automatic signal recognition (ASR) is becoming increasingly important in spectrum identification and cognitive radio, but most existing space-time block code (STBC) recognition algorithms are traditional ones and do not account for the complementarities ...
Yuyuan Zhang   +3 more
doaj   +1 more source

Codes over Matrix Rings for Space-Time Coded Modulations

open access: yes, 2010
It is known that, for transmission over quasi-static MIMO fading channels with n transmit antennas, diversity can be obtained by using an inner fully diverse space-time block code while coding gain, derived from the determinant criterion, comes from an ...
Belfiore, Jean-Claude   +2 more
core   +1 more source

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