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A protocol of multi-phase cooperative wireless networks for the lowest outage probability

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3 Author(s)
Chen Sun ; ATR Wave Eng. Lab., Kyoto ; Jun Cheng ; Taromaru, M.

Multi-phase cooperative communication in a wireless network is studied in this paper. Each node is a mobile module having multiple antennas (MA) or a group of sensors forming a virtual antenna array (VAA). The scenario comprises a number of multiple-input multiple-output (MIMO) channels with mutually independent Rayleigh fading processes. A data frame from a signal source node is split into portions. Each portion is transmitted from a distinct node in a sequential manner to the destination node. Theorem 1 gives the criterion on how to select wireless nodes for achieving the lowest outage probability of information capacity. Theorems 2 and 3 give the closed-form expressions of the for arbitrary signal-to-noise (SNR) situations. In situations, where a large number of nodes satisfy the condition in Theorem 1, a protocol is proposed to select a limited number of nodes to achieve a satisfactory performance. The theoretical results are useful to designing practical cooperative communication systems.

Published in:

Communications and Information Technologies, 2007. ISCIT '07. International Symposium on

Date of Conference:

17-19 Oct. 2007