Performance Analysis of Ultra Wide Band Communication System in Terms of Data Rate Dependency and Sampling Rate Dependency of an Indoor Wireless Channel Impulse Response

2018 ◽  
Author(s):  
Vitaly A. Karbolin ◽  
Vladimir I. Nosov
Keyword(s):  
Performance Analysis ◽  
Impulse Response ◽  
Communication System ◽  
Sampling Rate ◽  
Wide Band ◽  
Wireless Channel ◽  
Channel Impulse Response ◽  
Ultra Wide Band ◽  
Rate Dependency ◽  
Indoor Wireless

A Novel Channel Estimation Method Based on Power-Delay Profile

2014 ◽  
Vol 602-605 ◽  
pp. 2871-2877
Author(s):  
Ying Xin Yu ◽  
Gang Wang
Keyword(s):  
Impulse Response ◽  
Estimation Method ◽  
Wiener Filter ◽  
Doppler Frequency ◽  
Estimation Algorithm ◽  
Wireless Channel ◽  
Least Square ◽  
Channel Impulse Response ◽  
Power Delay Profile ◽  
Mmse Estimation

Considering the physical layer specification of the IEEE802.11 protocol as background, a novel LSE (least square estimation) algorithm based on power-delay profile of wireless channel is proposed. In multi-path time-variant channel, receiver carries out a primary MMSE estimation using training symbols and pilots of OFDM symbol firstly. Then the channel impulse response is obtained from frequency response estimated by MMSE. Finally, LSE algorithm is applied to revise the channel impulse response according to the power-delay profile. The LSE algorithm can reduce the noise level of MMSE estimation in time-domain which is equivalent to increasing the SNR to the output of 2-D wiener filter. Simulation results confirm that the proposed LSE algorithm gains a better performance in contrast to MMSE algorithm. As the Doppler frequency shift increases, LSE outperforms more significantly than MMSE algorithm.

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