Algorithm and Implementation of Channel Estimation Based on Scattered Pilots in the DVB-T System
碩士 === 國立中央大學 === 通訊工程研究所 === 93 === The OFDM technology is now widely used in broadband wireless communications, such as the DVB-T system. The channel estimation of the OFDM system is based on the priori signals and the receiver can fast estimate the channel response by using the known pilot tones....
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| Format: | Others |
| Language: | zh-TW |
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2005
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| Online Access: | http://ndltd.ncl.edu.tw/handle/74130366771621784073 |
| Summary: | 碩士 === 國立中央大學 === 通訊工程研究所 === 93 === The OFDM technology is now widely used in broadband wireless communications, such as the DVB-T system. The channel estimation of the OFDM
system is based on the priori signals and the receiver can fast estimate the channel response by using the known pilot tones. The DVB-T system estimates the channel by scattered pilots and uses the estimated samples to interpolate the total frequency response. This thesis investigates various algorithms for channel estimation. It includes the comparison of 1D and 2D channel estimations, the effect of different
interpolation methods on channel estimation and the difference of the system performance for different channel estimation methods when the system has residual synchronization errors. At the end of the thesis, a DVB-T channel estimation module is designed and implemented with the use of VHDL.
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