TY - GEN
T1 - Achievable rates and energy efficiency in cognitive radio channels with sensing errors
AU - Gursoy, M. Cenk
AU - Ozcan, Gozde
AU - Akin, Sami
PY - 2012
Y1 - 2012
N2 - In this paper, achievable rates and energy efficiency in cognitive radio channels are analyzed in the presence of sensing errors. The cognitive secondary users are initially assumed to perform channel sensing and then enter into data transmission phase. Under sensing uncertainty and Gaussian primary user interference assumptions, additive disturbance experienced at the secondary receiver is seen to have a Gaussian mixture density. Achievable rates under such assumptions are examined and a closed-form rate expression is determined. An outage capacity formulation is also derived. Finally, energy efficiency is analyzed by investigating the minimum energy per bit and wideband slope expressions in the low-SNR regime. Through this analysis, tradeoffs and interactions between sensing parameters, sensing performance, throughput, transmission energy, and energy efficiency are identified.
AB - In this paper, achievable rates and energy efficiency in cognitive radio channels are analyzed in the presence of sensing errors. The cognitive secondary users are initially assumed to perform channel sensing and then enter into data transmission phase. Under sensing uncertainty and Gaussian primary user interference assumptions, additive disturbance experienced at the secondary receiver is seen to have a Gaussian mixture density. Achievable rates under such assumptions are examined and a closed-form rate expression is determined. An outage capacity formulation is also derived. Finally, energy efficiency is analyzed by investigating the minimum energy per bit and wideband slope expressions in the low-SNR regime. Through this analysis, tradeoffs and interactions between sensing parameters, sensing performance, throughput, transmission energy, and energy efficiency are identified.
UR - http://www.scopus.com/inward/record.url?scp=84871501631&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84871501631&partnerID=8YFLogxK
U2 - 10.1109/ICCChina.2012.6356857
DO - 10.1109/ICCChina.2012.6356857
M3 - Conference contribution
AN - SCOPUS:84871501631
SN - 9781467328159
T3 - 2012 1st IEEE International Conference on Communications in China, ICCC 2012
SP - 24
EP - 29
BT - 2012 1st IEEE International Conference on Communications in China, ICCC 2012
T2 - 2012 1st IEEE International Conference on Communications in China, ICCC 2012
Y2 - 15 August 2012 through 17 August 2012
ER -