An Effective Channel Estimation Scheme for Bi-Directional Two-Timeslot OFDM Relay Transmission Using Analog Network Coding

2012 ◽  
Author(s):  
Yuta Koshimizu ◽  
Eiji Okamoto
Keyword(s):  
Channel Estimation ◽  
Network Coding ◽  
Analog Network Coding ◽  
Estimation Scheme ◽  
Effective Channel

A Simplified Time-Domain Channel Estimation Approach for OFDM System

2015 ◽  
Vol 738-739 ◽  
pp. 1111-1114
Author(s):  
Sheng Bo Huang ◽  
Yu Cang Wen ◽  
Wen Ye ◽  
Tong Liang Fan
Keyword(s):  
Channel Estimation ◽  
Impulse Response ◽  
Time Domain ◽  
Estimation Method ◽  
Channel Impulse Response ◽  
Estimation Algorithms ◽  
Estimation Scheme ◽  
Time Domain Averaging ◽  
The Time Domain ◽  
Effective Channel

OFDM usually incorporates pilot tones in the frequency domain (FD) or training symbols in the time-domain (TD) to facilitate channel estimation algorithms. TD channel estimation becomes more attractive in quasi-static channels because channel estimation scheme will optimize the spectral efficiency by re-using the training symbols designated for FD channel estimation. A channel estimation method based on time domain averaging algorithm is proposed. Due to the principle of centralized energy in time domain, the effective channel impulse response length can be detected by setting of threshold for the estimated channel impulse response length. Computer simulation demonstrates the performance of the proposed algorithms in terms of bit error rate performance.

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