摘要
X-structured precoding has been considered a promising precoding method for MIMO systems with maximum-likelihood (ML) receivers. It not only simplifies the precoder design, but allows a low-complexity ML detection scheme. For a real-world precoding scheme, a precoder can only be selected from a codebook and its index is fed back to the transmitter, known as limited-feedback precoding. Due to its special structure, two codebooks are required in X-structured precoding. In this paper, we first investigate how to construct the codebooks for X-structured precoding. Then, we consider the detection problem in limited-feedback X-structured precoding in which the X-structure no longer holds. With group successive interference cancelation, we propose a MIMO detection method to solve the problem. The synergy of the proposed methods yields a low-complexity ML precoding and detection scheme. Simulations show that the proposed methods provide satisfactory results.
原文 | English |
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DOIs | |
出版狀態 | Published - 1 1月 2013 |
事件 | 9th International Conference on Information, Communications and Signal Processing, ICICS 2013 - Tainan, 台灣 持續時間: 10 12月 2013 → 13 12月 2013 |
Conference
Conference | 9th International Conference on Information, Communications and Signal Processing, ICICS 2013 |
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國家/地區 | 台灣 |
城市 | Tainan |
期間 | 10/12/13 → 13/12/13 |