Symbol error rate of selection amplify-and-forward relay systems

Abstract

Cooperative diversity schemes significantly improve the performance of wireless networks by transmitting the same information through several nodes. The amplify-and-forward (AF) relaying method is one of the most attractive cooperative diversity schemes due to its low complexity. Selection AF relaying has recently been proven to achieve the same diversity order as and lower outage probability than All-Participate relays. In this letter, we present an asymptotic analysis of the symbol error rates of a selection AF network, and compare it with the conventional all-participate scheme.Index Terms-Symbol error rate, cooperative diversity, wireless cooperative networks.

Channel prediction in non-regenerative multi-antenna relay selection systems

“…Next, the average SER for coherent demodulation in a slow fading channel is found utilizing the CDF Fγ eq (·) (or Pout(·)) [9]:…”

“…where α, β are chosen to define specific modulation formats [9]. By approximating γ T ≈ γ T + 1 in (15) setting γ T = x 2 /β, the above integral can be solved using [21, eqn.…”

“…Furthermore, relay systems tend to have much lower implementation complexity [8] than full space-time coded alternatives. Fixed gain amplifyand-forward (AF) relay selection is particularly simple to implement compared to decode-and-forward, and has been well studied for single antenna devices [7,[9][10][11][12]. Non-selective beamforming for single antenna relay or destination devices is an alternative strategy [13], and Da Costa and Aissa [14] had explored a hybrid approach of multi-antenna source and destination communication with a single antenna relay.…”

Outage Performance of Opportunistic Amplify-and-Forward Relaying over Asymmetric Fading Environments

“…The outage performance of opportunistic amplify-andforward (AF) relaying over a symmetric fading environment is widely investigated in [1,3,4]. However, in practice, cooperative nodes are usually located in different geographical location environments and at different distances with respect to S and D. Therefore, one link could be either in line-of-sight (LOS) situation or in non-LOS (NLOS) situation.…”

Virtual Maximum Ratio Transmission for Downlink OFDMA Relay-based Networks

“…Jointly with Orthogonal Frequency Division Multiplexing (OFDM) [3] or Orthogonal Frequency Division Multiple-Access (OFDMA) [4] it can also provide reliability. Additionally, the idea of increasing coverage, capacity and reliability in future wireless networks by using cooperative single-antenna relays has recently attracted much attention [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20].…”