Guard sequence optimization for block transmission over linear frequency-selective channels

We show that the optimum length-/spl nu/ guard sequence for block transmission over a linear Gaussian-noise dispersive channel with memory /spl nu/ is a linear combination of the N information symbols of the block. A closed-form expression for the optimum guard sequence is derived subject to a total...

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Bibliographic Details
Published inIEEE transactions on communications Vol. 50; no. 6; pp. 938 - 946
Main Authors Al-Dhahir, N., Diggavi, S.N.
Format Journal Article
LanguageEnglish
Published New York IEEE 01.06.2002
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Blocking
Channels
Closed-form solution
Communication networks
Degradation
Dispersion
Exact solutions
Frequency
Gaussian channels
Guards
Interference constraints
Mathematical analysis
Optimization
Symbols
Throughput
Transmitters
Wideband
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Summary:We show that the optimum length-/spl nu/ guard sequence for block transmission over a linear Gaussian-noise dispersive channel with memory /spl nu/ is a linear combination of the N information symbols of the block. A closed-form expression for the optimum guard sequence is derived subject to a total average energy constraint on the information and guard symbols. The achievable channel block throughput with the optimum guard sequence is compared with that achievable with two common guard sequence types, namely zero stuffing and cyclic prefix.
Bibliography:ObjectType-Article-2
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ISSN:0090-6778
1558-0857
DOI:10.1109/TCOMM.2002.1010613