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Multiple-Source Cooperation: From Code-Division Multiplexing to Variable-Rate Network Coding

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2 Author(s)
Rong Zhang ; Sch. of Electron. & Comput. Sci., Univ. of Southampton, Southampton, UK ; Hanzo, L.

Multiple-source cooperation techniques, including conventional code-division multiplexing (CDM) and classic network coding (CNC), are investigated. We adopt a soft sum - product decoding algorithm for the CNC technique to efficiently process a large number of information streams and propose a flexible variable-rate network coding (VNC) technique, which is capable of attaining a near-optimum performance. Quantitatively, the proposed VNC method is capable of operating within 1 dB from the outage capacity of the quasi-static Rayleigh fading channel. The iterative decoding convergence of the multiple-source computation methods is analyzed with the aid of extrinsic information transfer charts.

Published in:

Vehicular Technology, IEEE Transactions on  (Volume:60 ,  Issue: 3 )

Date of Publication:

March 2011

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