A Virtual MIMO Path-Time Code for Cognitive Ad Hoc Networks
Journal
IEEE Communications Letters
Journal Volume
17
Journal Issue
1
Pages
4-7
Date Issued
2013-01
Author(s)
Abstract
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 end-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.
Type
journal article