TCP Performance Analysis in Cognitive Radio Networks
Kun Zhang · Video Engineering · 2011
In this paper,a Cognitive Radio(CR)platform under wireless circumstances is established,when the Primary User(PU) attempts to occupy the channel,the CR switch secondary user to another idle channel through spectrum sensing and spectrum allocation,so that the communication of secondary user can be continued,this is where the innovation lies.Performance of TCP Reno,TCP Newreno,TCP Sack1 and TCP vegas are all analyzed,incuding congestion window and throughput.Finally,the PU activity level,channel bandwidth after switch and the effect on TCP throughput by channel bit error rate are quantitatively analyzed.