Title :
Queueing analysis for block fading Rayleigh channels in the low SNR regime
Author :
Yunquan Dong ; Pingyi Fan
Author_Institution :
Dept. of Electron. Eng., Tsinghua Univ., Beijing, China
Abstract :
Wireless fading channels suffer from the time varying channel gains besides the Additive White Gaussian Noise (AWGN). As a result, it is impossible for fading channels to support a constant rate data stream without the help of buffers. In this paper, we consider information transmission over an infinite buffer-aided block Rayleigh fading channel in the low signal-to-noise ratio (SNR) regime, and characterize the transmission capability of the channel in terms of stationary queue length distribution and packet delay rather than using data rate only. Taking advantage of the memoryless property of the service provided by the channel in each block, which follows the negative exponential distribution, the transmission process is formulated as a discrete time discrete state D/G/1 queueing problem. The obtained results provide a full characterization of block Rayleigh fading channels and can be extended to the finite buffer aided transmissions.
Keywords :
AWGN; fading channels; queueing theory; time-varying channels; AWGN; SNR; additive white Gaussian noise; block fading Rayleigh channels; discrete time discrete state D/G/1 queueing problem; negative exponential distribution; packet delay; queueing analysis; signal-to-noise ratio; stationary queue length distribution; time varying channel gains; transmission capability; wireless fading channels; block Rayleigh fading channel; buffer-aided communication; packet delay; queue length distribution; queueing analysis;
Conference_Titel :
Wireless Communications & Signal Processing (WCSP), 2013 International Conference on
Conference_Location :
Hangzhou
DOI :
10.1109/WCSP.2013.6677046