TY - JOUR
T1 - Precoder design in downlink CoMP-JT MIMO network via WMMSE and asynchronous ADMM
AU - Wu, Zhikun
AU - Fei, Zesong
N1 - Publisher Copyright:
© 2018, Science China Press and Springer-Verlag GmbH Germany, part of Springer Nature.
PY - 2018/8/1
Y1 - 2018/8/1
N2 - Precoder design of coordinated multi-point joint transmission (CoMP-JT) multiple-input and multiple-output (MIMO) network aimied at throughput maximization is a challenging problem. In this paper, we propose an asynchronous distributed iterative method to solve this problem. We transform the original throughput maximizing problem to the weighted minimum mean square error (WMMSE) problem, then decompose the problem into a series of subproblems. Based on alternation direction method of multipliers (ADMM), the proposed algorithm can solve the optimal precoder in a distributed manner. With asynchronous information exchange mechanism considered, the convergence rate of our algorithm can be accelerated further. Numerical results demonstrate the increase of throughput and the optimality of the precoding scheme provided by our algorithm.
AB - Precoder design of coordinated multi-point joint transmission (CoMP-JT) multiple-input and multiple-output (MIMO) network aimied at throughput maximization is a challenging problem. In this paper, we propose an asynchronous distributed iterative method to solve this problem. We transform the original throughput maximizing problem to the weighted minimum mean square error (WMMSE) problem, then decompose the problem into a series of subproblems. Based on alternation direction method of multipliers (ADMM), the proposed algorithm can solve the optimal precoder in a distributed manner. With asynchronous information exchange mechanism considered, the convergence rate of our algorithm can be accelerated further. Numerical results demonstrate the increase of throughput and the optimality of the precoding scheme provided by our algorithm.
KW - alternation direction method of multipliers
KW - asynchronous method
KW - block coordinate descent
KW - coordinated multi-point joint transmission
KW - multiple-input and multiple-output
KW - weighted minimum mean square error
UR - http://www.scopus.com/inward/record.url?scp=85047610179&partnerID=8YFLogxK
U2 - 10.1007/s11432-017-9275-y
DO - 10.1007/s11432-017-9275-y
M3 - Article
AN - SCOPUS:85047610179
SN - 1674-733X
VL - 61
JO - Science China Information Sciences
JF - Science China Information Sciences
IS - 8
M1 - 082306
ER -