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| Content Provider | IET Digital Library |
|---|---|
| Author | Liu, Tsung Hsien Chiu, Chun Ning Lin, Che Yu |
| Abstract | Codebooks with constant modulus entries are being considered for the limited feedback beamforming multiple-input–multiple-output (MIMO) system to improve the power amplifier efficiency at the transmitter. Assume that one such codebook is known to both the transmitter and receiver. The receiver must determine a target codeword from this codebook and send its index back to the transmitter. A receiver can be implemented with low cost if fast codeword selection algorithm is executed. In this study, the authors utilise the properties possessed by three such codebooks and propose a novel tree search algorithm for fast codeword selection. Compared with two previously reported codeword selection algorithms, our algorithm is of fixed complexity and does find the target codeword. Furthermore, our algorithm for codeword selection is similar to the tree search for MIMO detection. These two similar tree search algorithms for both codeword selection and MIMO detection can be implemented by the same hardware architecture. A baseband receiver with small chip area for the dual-mode (the spatial multiplexing and beamforming transmission modes) MIMO system is possible. |
| Starting Page | 531 |
| Ending Page | 537 |
| Page Count | 7 |
| ISSN | 17518628 |
| Volume Number | 7 |
| e-ISSN | 17518636 |
| Issue Number | Issue 6, Apr (2013) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-com/7/6 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-com.2012.0017 |
| Journal | IET Communications |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Amplifiers Array Signal Processing Baseband Receiver Beamforming Transmission Mode Breadth-first Tree Search Codebooks Combinatorial Mathematics Constant Modulus Entries Dual-mode MIMO System Fast Codeword Selection Algorithm Limited Feedback Beamforming MIMO System Limited Feedback Beamforming Multiple-input-multiple-output System MIMO Communication MIMO Detection Power Amplifier Power Amplifier Efficiency Radio Link And Equipment Signal Detection Spatial Multiplexing Mode Tree Searching |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering Computer Science Applications |
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