MIMO Beamforming Design in Nonorthogonal Multiple Access Downlink Interference Channels
Hits:
Impact Factor:6.239
DOI number:10.1109/TVT.2018.2821166
Journal:IEEE Transactions on Vehicular Technology
Abstract:Nonorthogonal multiple access (NOMA) has been considered as a promising technology for fifth-generation wireless communication systems. In this paper, we consider a two-cell multiple-input-multiple-output NOMA downlink interference channel with one multiantenna base station (BS) and multiple multiantenna users in each cell. Each user treats interferences from adjacent cell as additional noises and does not attempt to decode them. This paper aims to design interference channel beamformers to maximize weighted sum capacity of the strongest users in two cells under quality of service requirements at other users and transmit power budget constraint at each BS. Such problem is complicated and nonconvex due to the expression of a logarithm of a determinant (log det) minus log det in the objective function and constraints. For the nonconvex problem, we put forward a successive convex approximation (SCA) based iterative algorithm. Since the computational complexity of SCA-based iterative algorithm is high, we also put forward an efficient majorization-minimization based iterative algorithm. Based on simulation results, we show that our developed NOMA schemes are superior to the zero-forcing-based NOMA, orthogonal-NOMA, and orthogonal multiple access schemes.
Co-author:Li Yiqing,李全忠,秦家银
First Author:jmiao
Indexed by:Journal paper
Correspondence Author:张旗
Discipline:Engineering
First-Level Discipline:Information and Communication Engineering
Document Type:J
Volume:67
Issue:8
Page Number:6951–6959
ISSN No.:1939-9359
Translation or Not:no
Date of Publication:2018-08-01
Included Journals:SCI
Links to published journals:https://ieeexplore.ieee.org/document/8328923
-
|
Telephone:7e1378ec218a2127d6cf1d4bc46a2338a75686d1863036ab047fdb6a61deb2c6aa639309144ce2f6b4bdb3cab6737fae378edc75bf0ced008dae061654aada5c82641f654114e3a486fcf3ad70c125de18632038ff890d24570780c66af64d6cf67c9e327805418180963904e041137622a29398a8f00cda93c5fb3c20672dd7
Email:5a677d12d1621e2d923df33e8dedd2f69647cc7ed77d3267d0c6a88e337aef925a94f7484d01e2f8f72fe9388989b5f62953157b598a9fb4bd96c2ce0ebb0e2a797dec8b74113ae25b251889880cacbd9673d4d6d6dc0368f897accf7add52810b2c2cfd02f22abeeb2536d5ffa430edaa90fda7ad54b37c46b55fdd70fe84a8
|