scholarly journals An Adaptive Near-far Resistant Single-user Channel Estimation Algorithm for Multipath Fading DS-CDMA Systems

2006 ◽  
Author(s):  
Ahmet Rizaner ◽  
Hasan Amca ◽  
Kadri Hacioglu ◽  
Ali H. Ulusoy ◽  
Ansgar Scherb
Keyword(s):  
Channel Estimation ◽  
Estimation Algorithm ◽  
Multipath Fading ◽  
Single User ◽  
Cdma Systems

An Improved DFT-Based Channel Estimation Algorithm for OFDM System on Time-Varying Multipath Fading Channels

2014 ◽  
Vol 989-994 ◽  
pp. 3786-3789 ◽  
Author(s):  
Xin Li Ma ◽  
Tong Liang Fan ◽  
Yong Feng Du
Keyword(s):  
Channel Estimation ◽  
Fading Channels ◽  
Estimation Algorithm ◽  
Multipath Fading ◽  
Statistical Information ◽  
Time Varying ◽  
Ofdm Systems ◽  
Ofdm System ◽  
Multipath Fading Channels ◽  
Suppress Noise

An improved discrete Fourier transform DFT-based channel estimation for OFDM systems is proposed. Conventional DFT-based channel estimator improved its performance by suppressing noise, but it does not completely suppress noise. In order to overcome the disadvantage, this paper proposed a gate method without requiring any channel statistical information. This method comprehensively considersthe effects of the power of the strongest path and the noises. Computer simulation demonstrates the performance of the proposed algorithms in terms of bit error rate.

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