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Accession Number
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ADA562486
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Title
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Cognitive Code-Division Channelization.
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Publication Date
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Apr 2011
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Media Count
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9p
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Personal Author
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D. A. Pados J. D. Matyjas K. Gao S. N. Batalama
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Abstract
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We consider the problem of simultaneous power and code-channel allocation for a secondary transmitter/receiver pair coexisting with a primary code-division multiple-access (CDMA) system. Our objective is to find the optimum transmitting power and code sequence of the secondary channel that maximize the signal-to-interference-plus-noise ratio (SINR) at the output of the maximum SINR linear receiver, while at the same time the SINR of all primary channels at the output of their max-SINR receiver is maintained above a certain threshold. This is a non-convex NP-hard optimization problem. We propose a novel feasible suboptimum solution using semidefinite programming. Simulation studies illustrate the theoretical developments.
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Keywords
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Code division multiple access
Code- channel allocation
Coding
Cognition
Cognitive radio
Computer programming
Dp
Power allocation
Semidefinite programming
Signal to noise ratio
Signal-to-interference-plus-noise ratio
Threshold effects
Transmitter receivers
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Source Agency
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Non Paid ADAS
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NTIS Subject Category
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46H - Radiofrequency Waves
45C - Common Carrier & Satellite
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Corporate Author
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State Univ. of New York at Buffalo. Dept. of Electrical and Computer Engineering.
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Document Type
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Journal article
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Title Note
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Journal article.
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NTIS Issue Number
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1225
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Contract Number
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FA8750-08-1-0063
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