Cooperative spectrum sensing algorithms for OFDM systems with frequency selective channels

Impact of I/Q imbalance on the performance of two-way CSI-assisted AF relaying

“…Then, the end-to-end signal-to-noise ratio (SNR) via the ith relay, γ wo i , can be expressed as (10). In order to derive the average SEP of the considered AF relaying system, the MGF approach is employed.…”

“…Recent research on the performance of cooperative networks in the presence of I/Q imbalance starts to be conducted. For instance, in [10], a cooperative sequential detection algorithm based on energy detectors was developed to mitigate the effects of timing and frequency offset, I/Q imbalance and uncertainty in noise and transmit power. In addition, a compensation algorithm for I/Q imbalance in oneway dual-hop channel state information (CSI)-assisted AF cooperative networks was proposed in our previous work [11].…”

Dual‐hop amplify‐and‐forward cooperative relaying in the presence of Tx and Rx in‐phase and quadrature‐phase imbalance

“…For instance, a precoding strategy, that enables blind estimation of carrier frequency offsets of each transmitter in cooperative scenario when the STBC OFDM is employed in the presence of I/Q imbalances, was proposed in [18]. In [19], cooperative sequential detection algorithms based on energy detectors were developed to mitigate the effects of timing and frequency offset, I/Q imbalance and uncertainty in noise and transmit power. Outage performance and error vector magnitude of OFDM AF relaying under I/Q imbalance were analysed in [20].…”

Multi-hop amplify-and-forward relaying cooperation in the presence of I/Q imbalance

“…For instance, a precoding strategy, that enables blind estimation of carrier frequency offsets at each transmitter in dual-hop cooperative scenario when space-time block-coding (STBC) OFDM is employed in the presence of I/Q imbalance, was proposed in [4]. In [5], a cooperative sequential detection algorithm based on energy detectors was developed to mitigate the effects of timing and frequency offset, I/Q imbalance and uncertainty in noise and transmit power. Moreover, a compensation algorithm for I/Q imbalance in dual-hop channel state information (CSI)-J.…”