Linear Precoding for Orthogonal Space-Time Block Coded MIMO-OFDM Cognitive Radio

The paper presents design of a linear precoder for orthogonal space-time block coded orthogonal frequency division multiplexing (OFDM)-based multiple-input multiple-output (MIMO) antenna cognitive radio (CR) when operating in correlated Rayleigh fading channels. Unlike previous studies on precoder d...

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Vydáno v:	IEEE transactions on communications Ročník 59; číslo 3; s. 767 - 779
Hlavní autoři:	Punchihewa, A, Bhargava, V K, Despins, C
Médium:	Journal Article
Jazyk:	angličtina
Vydáno:	New York, NY IEEE 01.03.2011 Institute of Electrical and Electronics Engineers The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Témata:	Antennas Applied sciences Blocking Coding, codes Cognitive radio convex optimization Correlation Design engineering Exact sciences and technology Information, signal and communications theory Interference Mathematical analysis Matrices Matrix methods MIMO multiple-input multiple-output antennas Multiplexing OFDM Optimization Orthogonal Frequency Division Multiplexing orthogonal space-time block coding Radio Radio transmitters Radiocommunication specific techniques Radiocommunications Receiving antennas Signal and communications theory Studies Telecommunications Telecommunications and information theory Transmitters Fading channels Performance evaluation MIMO system Block code orthogonal space-time block coding Space-time codes Error probability Computer simulation multiple-input multiple-output antennas Correlation matrix Rayleigh channels Multicarrier Transmitter Subcarrier Cognitive radio Convex programming Constrained optimization Upper bound Algorithm performance Coding Orthogonal frequency division multiplexing convex optimization Antenna Software radio
ISSN:	0090-6778, 1558-0857
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Popis
Shrnutí:	The paper presents design of a linear precoder for orthogonal space-time block coded orthogonal frequency division multiplexing (OFDM)-based multiple-input multiple-output (MIMO) antenna cognitive radio (CR) when operating in correlated Rayleigh fading channels. Unlike previous studies on precoder design for CR, this proposed linear precoder is capable of handling both transmit and receive correlation in a multi-carrier based CR system. The linear precoder is designed to minimize an upper bound on the average pairwise error probability, constrained to a set of per subcarrier transmit power constraints at the CR transmitter and a set of interference power thresholds at primary user receivers. The CR transmitter exploits the knowledge of transmit and receive correlation matrices while designing the precoder. It is shown that the linear precoder design problem is convex with these constraints, and convex optimization techniques are exploited to derive an efficient algorithm to obtain the optimal precoder matrices. Computer simulations are performed to investigate the performance of the proposed linear precoder in a CR system.
Bibliografie:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 14 content type line 23
ISSN:	0090-6778 1558-0857
DOI:	10.1109/TCOMM.2011.011811.090548