Co-ordinate Interleaved Distributed Space-Time Coding for two-antenna-relays networks

Distributed space time coding for wireless relay networks when the source, the destination and the relays have multiple antennas have been studied by Jing and Hassibi. In this set-up, the transmit and the receive signals at different antennas of the same relay are processed and designed independentl...

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Bibliographic Details
Published in:IEEE transactions on wireless communications Vol. 8; no. 4; pp. 1783 - 1791
Main Authors: Harshan, J., Rajan, B.S.
Format: Journal Article
Language:English
Published: New York, NY IEEE 01.04.2009
Institute of Electrical and Electronics Engineers
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
Antenna accessories
Antennas
Applied sciences
Asymptotic properties
Block codes
co-ordinate interleaving
Codes
Coding
coding gain
Coding, codes
Cooperative communication
Costs
distributed spacetime coding
Exact sciences and technology
Information, signal and communications theory
Mathematical analysis
Process design
Radiocommunications
Receiving antennas
Relay
Relay networks
Relays
Signal and communications theory
Signal design
Signal processing
Space time codes
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
Transmission and modulation (techniques and equipments)
Transmitting antennas
Vectors (mathematics)
Wireless communication
Block code
Space-time codes
Relay
distributed space-time coding
Cooperative communication
Interlacing
Wireless telecommunication
Diversity
co-ordinate interleaving
Routing
Coding
coding gain
Wireless network
Antenna array
ISSN:1536-1276, 1558-2248
Online Access:Get full text
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Summary:Distributed space time coding for wireless relay networks when the source, the destination and the relays have multiple antennas have been studied by Jing and Hassibi. In this set-up, the transmit and the receive signals at different antennas of the same relay are processed and designed independently, even though the antennas are colocated. In this paper, a wireless relay network with single antenna at the source and the destination and two antennas at each of the R relays is considered. A new class of distributed space time block codes called Co-ordinate Interleaved Distributed Space-Time Codes (CIDSTC) are introduced where, in the first phase, the source transmits a T-length complex vector to all the relays and in the second phase, at each relay, the in-phase and quadrature component vectors of the received complex vectors at the two antennas are interleaved and processed before forwarding them to the destination. Compared to the scheme proposed by Jing-Hassibi, for T ges 4R, while providing the same asymptotic diversity order of 2R, CIDSTC scheme is shown to provide asymptotic coding gain with the cost of negligible increase in the processing complexity at the relays. However, for moderate and large values of P, CIDSTC scheme is shown to provide more diversity than that of the scheme proposed by Jing-Hassibi. CIDSTCs are shown to be fully diverse provided the information symbols take value from an appropriate multi-dimensional signal set.
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ISSN:1536-1276
1558-2248
DOI:10.1109/TWC.2009.071303