JICCE (한국정보통신학회)
Current Result Document : 5 / 5
| 한글제목(Korean Title) |
Alternating-Projection-Based Channel Estimation for Multicell Massive MIMO Systems |
| 영문제목(English Title) |
Alternating-Projection-Based Channel Estimation for Multicell Massive MIMO Systems |
| 저자(Author) |
Yi Liang Chen
Rong Ran
Hayoung Oh
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| 원문수록처(Citation) |
VOL 16 NO. 01 PP. 0017 ~ 0022 (2018. 03) |
한글내용
(Korean Abstract) |
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영문내용
(English Abstract) |
In massive multiple-input multiple-output (MIMO) systems, linear channel estimation algorithms are widely applied owing to their simple structures. However, they may cause pilot contamination, which affects the subsequent data detection performance. Therefore, herein, for an uplink multicell massive multiuser MIMO system, we consider using an alternating projection (AP) for channel estimation to eliminate the effect of pilot contamination and improve the performance of data detection in terms of the bit error rates as well. Even though the AP is nonlinear, it iteratively searches the best solution in only one dimension, and the computational complexity is thus modest. We have analyzed the mean square error with respect to the signal-to-interference ratios for both the cooperative and non-cooperative multicell scenarios. From the simulation results, we observed that the channel estimation results via the AP benefit the following signal detection more than that via the least squares for both the cooperative and non-cooperative multicell scenarios.
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| 키워드(Keyword) |
Alternating projection
Channel estimation
Least squares
Multicell massive MIMO
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| 파일첨부 |
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