A Virtual MIMO Path-Time Code for Cognitive Ad Hoc Networks

doi:10.1109/LCOMM.2012.112012.121868

A Virtual MIMO Path-Time Code for Cognitive Ad Hoc Networks

2013-01-01

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DOI：10.1109/LCOMM.2012.112012.121868

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Cognitive radio networks (CRNs) consisting of opportunistic links greatly elevate the networking throughput per bandwidth in future wireless communications. In this letter, we show that by encoding a data packet into several coded packets and transmitting in various time slots, the ene-to-end transmission in the CRN can be equivalently formulated as a physical-layer multiple-input multiple-output (MIMO) communication problem. Two coding schemes are proposed in such a virtual MIMO scenario to enhance the end-to-end communication reliability by exploiting the path diversity. The closed-form expression of the theoretical error rate analysis validates that the proposed path-time codes can significantly improve the error rate performance.

Keyword:

Multiple-input multiple-output (MIMO)

cognitive radio network (CRN)

ad hoc network

space-time code

path-time code

A Virtual MIMO Path-Time Code for Cognitive Ad Hoc Networks

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