Title :
Asymptotic analysis for dual-hop communication networks with PSK and imperfect CSI
Author :
Sagias, Nikos C. ; Mallik, Ranjan K. ; Tselikas, Nikolaos D.
Author_Institution :
Dept. of Inf. & Telecommun., Univ. of Peloponnese, Tripoli, Greece
Abstract :
We develop an analytical framework for the end-to-end (e2e) asymptotic performance of pilot-symbol assisted Mary phase-shift keying (M-PSK) dual-hop relaying communication networks. The relays use the selective-decode-and-forward protocol and are equipped with multiple receive antennas. Channel estimation per antenna branch is done based on the least-squares estimation technique by means of pilot symbols. Also, maximal-ratio combining and coherent detection are performed at the receiving end. Simple approximate average symbol error probability (ASEP) expressions are obtained for high signal-to-noise ratio (SNR) when M ≥2. Our analysis is generic enough to account for any frequency-flat, time-selective, and/or arbitrarily correlated fading channel model per hop. As a case study, we provide e2e M-PSK ASEP expressions considering arbitrarily correlated Nakagami fading channels. Moreover, the optimal power allocation is studied, while the cooperation-gain and diversity-order are extracted. Numerical results are finally presented to verify the accuracy of our asymptotic expressions.
Keywords :
Nakagami channels; antenna radiation patterns; cooperative communication; correlation methods; decode and forward communication; diversity reception; error statistics; least squares approximations; multifrequency antennas; phase shift keying; protocols; receiving antennas; relay networks (telecommunication); M-PSK ASEP asymptotic expression; M-PSK dual-hop relaying communication network; Nakagami fading channel estimation; arbitrarily correlated fading channel model; channel state information; cooperation gain extraction; diversity order extraction; end-to-end asymptotic performance analysis; frequency-flat fading channel model; high SNR; high signal- to-noise ratio; imperfect CSI; least square estimation technique; maximal ratio combining; multiple receiving antenna; optimal power allocation; pilot symbol assisted M-ary phase shift keying; selective decode and forward protocol; symbol error probability expression; time-selective fading channel model; Covariance matrices; Fading; Nakagami distribution; Phase shift keying; Relays; Signal to noise ratio; Vectors; Average symbol error probability (ASEP); Mary phase-shift keying (M-PSK); channel state information (CSI); cooperative communications; correlated fading; decode-and-forward (DF); least-squares estimation (LSE); maximal-ratio combining (MRC); relays;
Conference_Titel :
Wireless Communications and Networking Conference (WCNC), 2014 IEEE
Conference_Location :
Istanbul
DOI :
10.1109/WCNC.2014.6952202
