TY  - EJOU
AU  - Wang, Lei 
AU  - Liu, Jian 
AU  - Zhao, Changming 
AU  - Yang, Alan 

TI  - Analysis of Underlay Cognitive Radio Networks Based on Interference Cancellation Mechanism
T2  - Computers, Materials \& Continua

PY  - 2020
VL  - 63
IS  - 1
SN  - 1546-2226

AB  - In this paper, we investigate the performance of secondary transmission scheme based on Markov ON-OFF state of primary users in Underlay cognitive radio networks. We propose flexible secondary cooperative transmission schemewith interference cancellation technique according to the ON-OFF status of primary transmitter. For maximal ratio combining (MRC) at destination, we have derived exact closed-form expressions of the outage probability in different situations. The numerical simulation results also reveal that the proposed scheme improve the secondary transmission performance compared with traditional mechanism in terms of secondary outage probability and energy efficiency.
KW  - Cognitive radio
KW  -  Markov ON-OFF state
KW  -  relay selection
KW  -  outage probability

DO  - 10.32604/cmc.2020.06680