Low Complexity Zeroforcing Precoder Design Under Per-Antenna Power Constraints

作者：Jang Jinyoung; Jeon Sang Woon; Chae Hyukjin; Cha Hyun Su; Kim Dong Ku^*

来源：IEEE Communications Letters, 2015, 19(9): 1556-1559.

DOI：10.1109/LCOMM.2015.2431252

• Computational complexity
• multi-antenna
• per-antenna power constraints
• precoder design
• zeroforcing

The K-user multiple- input single-output broadcast channel is considered under per-antenna power constraints, i.e., each transmit antenna must satisfy its own power constraint. A low complexity zeroforcing (ZF) precoder is proposed when the number of transmit antennas M is greater than K. The proposed precoder design significantly reduces computational complexity for the precoder construction while attaining the sum spectral efficiency close to that achievable by the optimal ZF precoder.

• 出版日期2015-9