We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Precoder Distribution and Adaptive Codebook in Wideband Precoding.
- Authors
Hang Long; Kyeong Jin Kim; Wei Xiang; Jing Wang; Yuanan Liu; Wenbo Wang
- Abstract
Based on wideband precoding (WBP) in the multiple-input multiple-output orthogonal frequency division multiplexing system, an adaptive nonuniform codebook is presented in this paper. The relationship between the precoder distribution and spatial correlation is analyzed at first. A closed-form expression based on overlapped isosceles triangles is proposed as an approximation of the precoder distribution. Then, the adaptive codebook design is derived with the approximate distribution to minimize quantization errors. The capacity and bit error rate performance demonstrate that the adaptive codebook with WBP outperforms the conventional fixed uniform codebook.
- Subjects
MIMO systems; BROADBAND communication systems; ADAPTIVE antennas; ORTHOGONAL frequency division multiplexing; SPATIAL analysis (Statistics); GEOMETRIC quantization
- Publication
ETRI Journal, 2012, Vol 34, Issue 5, p655
- ISSN
1225-6463
- Publication type
Article
- DOI
10.4218/etrij.12.0112.0072