Distributed synchronization protocol for secondary Overlay access in cognitive radio networks

Abstract

A secondary distributed synchronization protocol in the Overlay based Hybrid Automatic Repeat request cognitive radio has been proposed. A detailed description for our protocol is given and simulation runs have been carried out. Our results show how secondary users can achieve synchronous reception on the primary receiver with the transmission from the primary transmitter. This synchronization represents a key functioning in the Overlay access scheme in cognitive radio networks.