Name
Title | ||
|---|---|---|
Downlink Non-Orthogonal Multiple Access (Noma) Combined With Single User Mimo (Su-Mimo) |
Abstract | ||
|---|---|---|
This paper investigates a downlink non-orthogonal multiple access (NOMA) combined with single user MIMO (SU-MIMO) for future LTE (Long-Term Evolution) enhancements. In particular, we propose practical schemes to efficiently combine NOMA with open-loop SU-MIMO (Transmission Mode 3: TM3) and closed-loop SU-MIMO (Transmission Mode 4: TM4) specified in LTE. The goal is also to clarify the performance gains of NOMA combined with SU-MIMO transmission, taking into account the LTE radio interface such as frequency-domain scheduling, adaptive modulation and coding (AMC), and NOMA specific functionalities such as, multi-user pairing/ordering, transmit power allocation and successive interference cancellation (SIC) at the receiver side. Based on computer simulations, we evaluate NOMA link-level performance and show that the impact of error propagation associated with SIC is marginal when the power ratio of cell-edge and cell-center users is sufficiently large. In addition, we evaluate NOMA system-level performance gains for different granularities of scheduling and MCS (modulation and coding scheme) selection, for both genie-aided channel quality information (CQI) estimation and approximated CQI estimation, and using different number of power sets. Evaluation results show that NOMA combined with SU-MIMO can still provide a hefty portion of its expected gains even with approximated CQI estimation and limited number of power sets, and also when LTE compliant subband scheduling and wideband MCS is applied. |
Year | DOI | Venue |
|---|---|---|
2015 | 10.1587/transcom.E98.B.1415 | IEICE TRANSACTIONS ON COMMUNICATIONS |
Keywords | Field | DocType |
cellular system, non-orthogonal multiple access, superposition coding, MIMO, successive interference cancellation | MIMO-OFDM,Noma,Multi-user MIMO,3G MIMO,Computer science,Superposition coding,MIMO,Computer network,Telecommunications link | Journal |
Volume | Issue | ISSN |
E98B | 8 | 0916-8516 |
Citations | PageRank | References |
1 | 0.56 | 7 |
Authors | ||
5 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Anass Benjebbour | 1 | 1111 | 83.35 |
| Anxin Li | 2 | 582 | 42.97 |
| Keisuke Saito | 3 | 43 | 5.37 |
| Yoshihisa Kishiyama | 4 | 1185 | 140.34 |
| Takehiro Nakamura | 5 | 969 | 75.38 |