2015/02/07 by Derrick Wing Kwan Ng, Yongpeng Wu, Ng, Derrick Wing Kwan +3
Computer Science · Engineering · #Advanced MIMO Systems Optimization #Cooperative Communication and Network Coding #Energy Harvesting in Wireless Networks #FOS: Computer and information sciences #Full-Duplex Wireless Communications #Information Theory (cs.IT)
paper · pdf · doi:10.48550/arxiv.1502.02134
openalex publication_date 2015/02/07 · openalex created_date 2022/10/05 · openalex updated_date 2026/07/28
In this paper, we study the resource allocation algorithm design for\ndistributed antenna multiuser networks with full-duplex (FD) radio base\nstations (BSs) which enable simultaneous uplink and downlink communications.\nThe considered resource allocation algorithm design is formulated as an\noptimization problem taking into account the antenna circuit power consumption\nof the BSs and the quality of service (QoS) requirements of both uplink and\ndownlink users. We minimize the total network power consumption by jointly\noptimizing the downlink beamformer, the uplink transmit power, and the antenna\nselection. To overcome the intractability of the resulting problem, we\nreformulate it as an optimization problem with decoupled binary selection\nvariables and non-convex constraints. The reformulated problem facilitates the\ndesign of an iterative resource allocation algorithm which obtains an optimal\nsolution based on the generalized Bender's decomposition (GBD) and serves as a\nbenchmark scheme. Furthermore, to strike a balance between computational\ncomplexity and system performance, a suboptimal algorithm with polynomial time\ncomplexity is proposed. Simulation results illustrate that the proposed GBD\nbased iterative algorithm converges to the global optimal solution and the\nsuboptimal algorithm achieves a close-to-optimal performance. Our results also\ndemonstrate the trade-off between power efficiency and the number of active\ntransmit antennas when the circuit power consumption is taken into account. In\nparticular, activating an exceedingly large number of antennas may not be a\npower efficient solution for reducing the total system power consumption. In\naddition, our results reveal that FD systems facilitate significant power\nsavings compared to traditional half-duplex systems, despite the non-negligible\nself-interference.\n