Full-rate distributed space-time coding for bi-directional cooperative communications

2010 ◽  
Author(s):  
Hoc Phan ◽  
Trung Q. Duong ◽  
Hans-Jurgen Zepernick
Keyword(s):  
Cooperative Communications ◽  
Space Time ◽  
Space Time Coding ◽  
Full Rate ◽  
Time Coding

Space-Time Coding For Non-Coherent Cooperative Communications

2010 ◽  
pp. 352-380
Author(s):  
J. Harshan ◽  
G. Susinder Rajan ◽  
B. Sundar Rajan
Keyword(s):  
Fading Channels ◽  
Cooperative Communications ◽  
Channel Model ◽  
Space Time ◽  
Time Block ◽  
Relay Nodes ◽  
Space Time Coding ◽  
Space Time Block Codes ◽  
Time Coding ◽  
And Performance

Cooperative communication in a wireless network can be based on the relay channel model where a set of users act as relays to assist a source terminal in transmitting information to a destination terminal. Recently, the idea of space-time coding (STC) has been applied to wireless networks wherein the relay nodes cooperate to process the received signal from the source and forward them to the destination such that the signal received at the destination appears like a space-time block code (STBC). Such STBCs (referred as distributed space time block codes [DSTBCs]) when appropriately designed are known to offer spatial diversity. It is known that separate classes of DSTBCs can be designed based on the destination‘ s knowledge of various fading channels in the network. DSTBCs designed for the scenario when the destination has either the knowledge of only a proper subset of the channels or no knowledge of any of the channels are called non-coherent DSTBCs. This chapter addresses the problems and results associated with the design, code construction, and performance analysis (in terms of pairwise error probability [PEP]) of various noncoherent DSTBCs.

Space-Time Coding Technique Based on Four-Antenna Transceiver System

2011 ◽  
Vol 135-136 ◽  
pp. 913-917
Author(s):  
Yan Chu ◽  
Chun Hua Deng ◽  
Yan Shao ◽  
Hai Guang Wang
Keyword(s):  
Communication Systems ◽  
Transmission Rate ◽  
Block Code ◽  
Space Time ◽  
Space Time Coding ◽  
Time Diversity ◽  
Rate Transmission ◽  
Full Rate ◽  
Self Adaptation ◽  
Time Coding

Space-time block code, as one of the space-time codes, greatly improves the performance in the cooperative wireless communication systems by the use of space and time diversity. However, traditional STBC can’t enhance the overall transmission rate and there is no form of complex codes with the rate of 1 when the number of antenna is more than 2. In order to design codes with full-rate, we refer to quasi-orthogonal STBC whose generator matrix is orthogonal between its subspaces. In this paper, based on the combination of QO-STBC and Self-adaptation technology, we propose a new plan of space-time coding which dismisses the interference among symbols when decoding and advances the coding capabilities in the context of full-rate transmission, finally we justify the new plan through lots of computational simulations.

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