Abstract:We investigate the joint effects of feedback delay and channel estimation errors (CEE) over Nakagami-fading channels for two-hop amplify-and-forward (AF) relaying systems with transmit beamforming (TB) and relay selection (RS). We derive new closed-form expressions for the system outage performance including the exact analysis and informative high SNR asymptotic approximations, which indicate that TB feedback delay reduces the achievable diversity order to one, regardless of Nakagamifading parameters. Whereas … Show more
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