TY - JOUR
T1 - Comment on 'Optimal Precoding for a QoS Optimization Problem in Two-User MISO-NOMA Downlink'
AU - Chen, Zhiyong
AU - Ding, Zhiguo
AU - Xu, Peng
AU - Dai, Xuchu
AU - Xu, Jie
AU - Ng, Derrick Wing Kwan
N1 - Funding Information:
Manuscript received March 31, 2017; revised April 26, 2017 and May 15, 2017; accepted May 20, 2017. Date of publication May 23, 2017; date of current version September 8, 2017. The work of Z. Chen and X. Dai was supported in part by the National Natural Science Foundation of China under Grant 61471334, in part by the National Basic Research Program of China (973 Program: 2013CB329004). The work of Z. Ding was supported in part by the UK EPSRC under Grant EP/L025272/1 and in part by H2020-MSCA-RISE-2015 under Grant 690750. The work of P. Xu was supported by the Scientific and Technological Research Program of Chongqing Municipal Education Commission under Grant KJ1704088. The associate editor coordinating the review of this letter and approving it for publication was P. Salvo Rossi. (Corresponding author: Zhiyong Chen.) Z. Chen and X. Dai are with the Key Laboratory of Wireless-Optical Communications, Chinese Academy of Sciences, School of Information Science and Technology, University of Science and Technology of China, Hefei 230026, China (e-mail: [email protected]; [email protected]).
Publisher Copyright:
© 1997-2012 IEEE.
PY - 2017/9
Y1 - 2017/9
N2 - Recently, optimum non-orthogonal multiple access (NOMA) precoding for a two-user multiple-input single-output (MISO) downlink has been proposed by Chen et al. Reference [1, Proposition 1] demonstrates that strong duality holds for the MISO-NOMA precoding optimization problem. Hence, the proposed preocoding algorithm is not only locally optimal, but also globally optimal. However, the proof of this proposition is flawed. In this regard, we provide a corrected proof in this comment.
AB - Recently, optimum non-orthogonal multiple access (NOMA) precoding for a two-user multiple-input single-output (MISO) downlink has been proposed by Chen et al. Reference [1, Proposition 1] demonstrates that strong duality holds for the MISO-NOMA precoding optimization problem. Hence, the proposed preocoding algorithm is not only locally optimal, but also globally optimal. However, the proof of this proposition is flawed. In this regard, we provide a corrected proof in this comment.
KW - multiple-input-single-output (MISO)
KW - Non-orthogonal multiple access (NOMA)
KW - precoding
UR - https://www.scopus.com/pages/publications/85030030110
U2 - 10.1109/LCOMM.2017.2707491
DO - 10.1109/LCOMM.2017.2707491
M3 - Review article
AN - SCOPUS:85030030110
SN - 1089-7798
VL - 21
SP - 2109
EP - 2111
JO - IEEE Communications Letters
JF - IEEE Communications Letters
IS - 9
M1 - 7932918
ER -