Impact of antenna correlation on the performance of partial relay selection

Abstract

Antenna correlation is generally viewed as an obstacle to realize the desired performance of a wireless system. In this article, we investigate the performance of partial relay selection in the presence of antenna correlation. We consider both channel state information (csi)-assisted and fixed gain amplify-and-forward (AF) relay schemes. The source and the destination are equipped with multiple antennas communicating via the best first hop signal-to-noise ratio (SNR) relay. We derived the closed form expression for outage probability, average symbol error rate (SER) for both schemes. Further, an exact expression is derived for the ergodic capacity in the csi-assisted relay case and an approximated expression is considered for the fixed gain case. Moreover, we provide simple asymptotic results and show that the diversity order of the system remains unchanged with the effect of antenna correlation for both types of relay schemes.

Performance Analysis of OSTBC for Partial Relay Selection with Correlated Antennas over Nakagami-m Fading

“…On the other hand, partial relay selection either by selecting the maximum SNR of the firsthop [1] or second-hop [3]. In [4], the partial relay selection with beamforming in correlated antennas over Rayleigh fading is considered with single antenna relay nodes.…”

Cooperative overlay secondary transmissions exploiting primary retransmissions

“…The N relays are considered to be in a cluster, so that they are assumed to be at approximately the same position. The simplifying assumption that the relays are organized within a cluster is commonly utilized in the literature and can represent a number of practical scenarios (please see, for instance, [16][17][18][19][20]). The channel between any transmitter i and receiver j is denoted by h ij and follows a Nakagami-m distribution [21] with fading parameter m ij and average power λ ij .…”