Design and Analysis of Digital Beamforming in MIMO-OFDM Modem
碩士 === 國立交通大學 === 資訊科學與工程研究所 === 99 === Digital beamforming in MIMO-OFDM system is an efficient way to improve the performance. It emphasized that the signals of interest and minimize interfering signals. Using received signals and controlling the beam pattern is used to steering the direction of ma...
| Main Authors: | , |
|---|---|
| Other Authors: | |
| Format: | Others |
| Language: | en_US |
| Published: |
2010
|
| Online Access: | http://ndltd.ncl.edu.tw/handle/00695375580064548525 |
| Summary: | 碩士 === 國立交通大學 === 資訊科學與工程研究所 === 99 === Digital beamforming in MIMO-OFDM system is an efficient way to improve the performance. It emphasized that the signals of interest and minimize interfering signals. Using received signals and controlling the beam pattern is used to steering the direction of maximum gain.
In this paper, the estimation of arrival of angle (AOA) is proposed. This method used the correlation power of transmitted signals by searching the maximal quality at received. In addition, it could find an arrival angle on received-end and used weighting vector to adjust angle of beam pattern to steering them. Weighting vector can promote signals of interest quality and improve SINR (Signal Interference Noise Ratio), increasing performance.
The simulation platform is 3GPP Long-Term Evolution (LTE) with Spatial Channel Model (SCM) channel. It showed that the proposed algorithm with digital beamforming is better than with the unused digital beamforming system. All of these simulations are in MIMO-OFDM 4×4 platform.
|
|---|