Single-Relay Selections with Amplify Forwarding and Network Coding in Two-Way Relay Channels

Time‐Efficient Power Allocation Scheme for Two‐Way Multi‐relay Cognitive Radio Networks

“…They are modeled as zero-mean complex Gaussian random variables with variances σ 2 s1,ri and σ 2 ri,s2 respectively, and it is also assumed that the channels are symmetrical, which means that the channel coefficients of both directions between the two corresponding nodes are the same, which is a common assumption in two-way networks investigated in Refs. [6,[16][17][18][19][20][21]. So the signal to be forwarded by R i can be expressed as…”

“…Resource allocation schemes for conventional two-way relay channel networks are investigated in Refs. [16][17][18][19][20][21]. In Ref.…”

“…However, schemes proposed in Refs. [16][17][18][19][20][21] are not applicable to CR relay networks since interference constraints may be violated.…”

Phase Optimization for Massive IRS-Aided Two-Way Relay Network

“…The proposed method was applied to optimally find relay beamforming weights and transceiver transmit power. To improve spectral efficiency of one-way relay network, single relay-selection strategies with amplify forwarding and network coding in multi-two-way network were proposed in [32], which could achieve full diversity and low bit error rate. Under the total power constraint, power allocation among the cognitive nodes has an important influence on performance.…”