Results 31 to 40 of about 32,936 (311)

The Streaming-DMT of Fading Channels [PDF]

open access: yesIEEE Transactions on Information Theory, 2014
We consider the sequential transmission of a stream of messages over a block-fading multi-input-multi-output (MIMO) channel. A new message arrives at the beginning of each coherence block, and the decoder is required to output each message sequentially, after a delay of $T$ coherence blocks.
Ashish Khisti, Stark C. Draper
openaire   +2 more sources

Impact of Imperfect Channel State Information on RS Coding Aided Hybrid-ARQ in Rayleigh Fading Channels [PDF]

open access: yes, 2010
Hybrid Automatic-Repeat-reQuest (ARQ) schemes are capable of maintaining reliable communications for transmission over hostile wireless channels. In coherent detection aided schemes, the achievable performance substantially depends on the accuracy of ...
H. A. Ngo   +3 more
core   +1 more source

Normal approximations for fading channels [PDF]

open access: yes2018 52nd Annual Conference on Information Sciences and Systems (CISS), 2018
Capacity and outage capacity characterize the maximum coding rate at which reliable communication is feasible when there are no constraints on the packet length. Evaluated for fading channels, they are important performance benchmarks for wireless communication systems. However, the latency of a communication system is proportional to the length of the
Alejandro Lancho   +2 more
openaire   +2 more sources

Linear Equalization Combined with Multiple Symbol Decision Feedback Detection for Differential Space-Time Modulation

open access: yesEURASIP Journal on Advances in Signal Processing, 2002
Differential space-time modulation (DSTM) for multiple antenna communication systems has been recently proposed for frequency-nonselective fading channels. In broadband multirate systems, frequency-selective fading may occur.
Wang Genyuan, Song Aijun, Xia Xiang-Gen
doaj   +1 more source

On the Secrecy Capacity of Fading Channels [PDF]

open access: yes2007 IEEE International Symposium on Information Theory, 2007
We consider the secure transmission of information over an ergodic fading channel in the presence of an eavesdropper. Our eavesdropper can be viewed as the wireless counterpart of Wyner's wiretapper. The secrecy capacity of such a system is characterized under the assumption of asymptotically long coherence intervals. We first consider the full Channel
Praveen Kumar Gopala   +2 more
openaire   +3 more sources

An error bound analysis for M-DPSK in frequency-selective Rayleigh fading channel with diversity reception [PDF]

open access: yes, 1994
A theoretical upper bound is presented to calculate the error probability for raised cosine filtered M-ary differential phase-shift keying (RC M-DPSK) in frequency-selective Rayleigh fading channels.
Nix, AR, Chow, YC, McGeehan, JP
core   +1 more source

Exact BER Analysis of OFDM Systems Communicating over Frequency-Selective Fading Channels Subjected to Carrier Frequency Offset

open access: yes, 2007
Orthogonal Frequency Division Multiplexing (OFDM) has been employed in numerous wireless standards. However, the performance of OFDM systems is degraded by both the Carrier Frequency Offset (CFO) and the Phase Estimation Error (PER).
Liu, X.   +3 more
core   +1 more source

General Switch-and-Stay Combing for Space Diversity over Rayleigh Fading Channels

open access: yesInternational Journal of Antennas and Propagation, 2012
Three multibranch switch-and-stay combining (MSSC) schemes are analyzed for Rayleigh fading channels, where different decision statistics for antenna switching (i.e., switch statistic) are used.
Yawgeng A. Chau, Yao-Hua Chen
doaj   +1 more source

Spectrum Sensing for Cognitive Radios With Unknown Noise Variance and Time-variant Fading Channels

open access: yesIEEE Access, 2017
The unknown noise variance and time-variant fading channels make the spectrum sensing design a challenging task for cognitive radios. Most existing sensing methods suffer from the information uncertainty and can hardly acquire promising performances in ...
Shenghong Li   +4 more
doaj   +1 more source

A multiuser, multicarrier link adaptation atrategy for fading channels with PER constraints [PDF]

open access: yes, 2011
Link Adaptation can dynamically adjust a number of transmission parameters, most often modulation and coding, to reflect the characteristics of the wireless link to improve throughput and maintain link reliability.
M. Nicolaou   +7 more
core   +1 more source

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