Opportunistic Cooperative Communication in the Presence of Co-Channel Interferences and Outdated Channel Information

Outage analysis of relay selection in AF with outdated channel information in the presence of co-channel interference

“…Substituting (12) and (10) in (11) and after performing many algebraic manipulations, the PDF of γ eff SR can be obtained as shown in (13) on the next page. The CDF of γ eff SRk can be obtained directly from (13), using F Y (γ th ) = γth 0 f Y (z)dz and after many manipulations can be expressed as in (14) (See next page). A special case arises when N R = 0 which is equivalent to a system with no interference at the relay nodes.…”

“…Recently, a few studies [13]- [16] have investigated the joint impact of CCI and outdated CSI in cooperative networks under various sytem models. In [13], the authors proposed an AF partial relay selection whereas Ikki et al [14] considered an opportunistic DF relay selection where the selection criterion was based on the highest signal-to-noise ratio (SNR). In [15], a multiuser multiple antenna CSI-assisted AF relaying scheme is employed over Rayleigh fading.…”

“…In this work, we study the joint impact of CCI and outdated CSI in opportunistic best relaying AF systems. Unlike [14], a CSI-assisted variable-gain AF protocol is employed and the selection of the best relay is based on the highest signal-to-interference-plusnoise ratio (SINR). Moreover, the system model presented here is different from [15]- [17] and it is assumed that all the relays and destination are affected by interference and the relay selection is based on the end-to-end instantaneous CSI whereas in [16], partial relay selection is used to determine the best destination to be served by the source and the destination nodes are interference free.…”

Vertical Handoff Algorithm Based On the Improved Joint Vertical Handover

“…WLAN allows to use non-authorized radio frequency range to carry on wireless connection in local environment. IEEE formulated relative technology criterion for that in 1997,that is IEEE 802.11 norm, this standard is able to movement protocol of transmission layer and SIP protocol of application layer.MIP and SIP protocols are two handoff agreements which are standardized by IETF [10].…”

Performance Analysis of Dual-Hop AF Relay Networks in the Presence of Channel Estimation Errors and Feedback Delay

“…Outage probability based robust distributed beamforming in multi-user cooperative networks with imperfect CSI is examined in [6]. Further, the impacts of outdated CSI and co-channel interference on the performance of opportunistic and optimum combining decode-and-forward cooperative networks were investigated in [7] and [8]. The researchers in [9] investigate the impacts of feedback delay and interference on dual-hop AF relay networks with beamforming transmission.…”