Title :
Analysis of BER and capacity for dual-hop OFDM relay system with subcarrier mapping in Nakagami-m fading
Author :
Shah, Raza Ali ; Rajatheva, Nandana ; Yusheng Ji
Author_Institution :
Asian Inst. of Technol., Pathumthani, Thailand
Abstract :
This paper presents the analysis of BER and ergodic capacity for dual-hop orthogonal frequency division multiplexing (OFDM) Amplify-and-forward (AF) relay system with subcarrier mapping (SCM) in Nakagami-m fading channel for m ≤ 1. The performance of capacity-enhancement optimal pairing scheme, i.e., Best-to-Best (BTB) SCM scheme is analyzed for the two special cases of Nakagami-m fading, i.e., one sided Gaussian fading and Rayleigh fading. The exact and approximate closed-form expressions for the moment generating function (MGF) of end-to-end SNR are derived. The upper bound for ergodic capacity is also derived. The simulation results validate the analysis in Nakagami-m fading channel.
Keywords :
Gaussian channels; Nakagami channels; OFDM modulation; Rayleigh channels; amplify and forward communication; error statistics; relay networks (telecommunication); BER; Nakagami-m fading; Rayleigh fading channel; amplify-and-forward relay; bit error rate; closed form expression; dual hop OFDM relay system capacity; ergodic capacity; moment generating function; one sided Gaussian fading channel; orthogonal frequency division multiplexing; signal-to-noise ratio; subcarrier mapping; Analytical models; Bit error rate; OFDM; Rayleigh channels; Relays; Signal to noise ratio;
Conference_Titel :
Communications (ICC), 2014 IEEE International Conference on
Conference_Location :
Sydney, NSW
DOI :
10.1109/ICC.2014.6884128
