Name
Abstract | ||
|---|---|---|
In this letter, we elucidate the ergodic capacity of multiple-input multiple-output (MIMO) systems with M-ary phase-shift keying (MPSK) modulation and time-multiplexed pilots in frequency-flat Rayleigh fading environment. With linear minimum mean square error (LMMSE) channel estimation, the optimal pilots design is presented. For mathematical tractability, we derive an easy-computing closed-form lower bound of the channel capacity. Based on the lower bound, the optimal power allocation between the data and pilots is also presented in closed-form, and the optimal training length is investigated by numerical optimization. It is shown that the transmit scheme with equal training and data power and optimized training length provides suboptimal performance, and the transmit scheme with optimized training length and training power is optimal. With the latter scheme, in most situations, the optimal training length equals the number of the transmit antennas and the corresponding optimal power allocation can be easily computed with the proposed formula. |
Year | DOI | Venue |
|---|---|---|
2006 | 10.1093/ietcom/e89-b.9.2629 | IEICE TRANSACTIONS ON COMMUNICATIONS |
Keywords | Field | DocType |
MIMO system, channel capacity, MPSK modulation, time-multiplexed pilots, channel estimation | Rayleigh fading,Computer science,Control theory,Upper and lower bounds,Keying,Minimum mean square error,MIMO,Optimal estimation,Channel capacity,Phase-shift keying | Journal |
Volume | Issue | ISSN |
E89B | 9 | 0916-8516 |
Citations | PageRank | References |
0 | 0.34 | 0 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Yifei Zhao | 1 | 94 | 7.61 |
| Ming Zhao | 2 | 7 | 3.21 |
| Yunzhou Li | 3 | 345 | 36.62 |
| Jing Wang | 4 | 1038 | 105.16 |