Hybrid Precoding in Cooperative Millimeter Wave Networks

In this paper, we study the performance of cooperative millimeter wave (mmWave) networks with hybrid precoding architectures. Considering joint transmissions and BS silence strategy, propose algorithms which minimize sum power consumption base stations (BSs), for both fully- partially-connected (FHP PHP, respectively) schemes, single-carrier orthogonal frequency-division multiplexing systems. We reformulate analog part as an equal-gain transmission problem, only depends on channel information, digital a relaxed convex semidefinite program subject to per-user quality-of-service constraints that gives optimal in terms strategy. order reduce complexity algorithm sub-optimal iteratively put BSs small into silent mode. The simulation results show that, depending parameter settings, PHP may be dominated by RF transmit it result larger than FHP. For cases 2 4 users, implementation FHP reduces required power, compared case non-cooperative network, 71% 56%, respectively.