Successive data schism and interpolation for channel estimation in OFDM using wavelet denoising
- Resource Type
- Conference
- Authors
- Alnuaimy, Ahmed N. H.; Ismail, Mahamod; Ali, Mohd A. M.
- Source
- 2010 The 12th International Conference on Advanced Communication Technology (ICACT) Advanced Communication Technology (ICACT), 2010 The 12th International Conference on. 1:661-665 Feb, 2010
- Subject
- Communication, Networking and Broadcast Technologies
Computing and Processing
Interpolation
Channel estimation
OFDM
Noise reduction
Frequency estimation
Transmitters
Fading
Interference
Data engineering
Systems engineering and theory
estimation
orthogonal frequency division multiplexing (OFDM)
Comb type
Block type
Wavelet denoising
- Language
- ISSN
- 1738-9445
This paper presents a new technique of interpolation for channel estimation in OFDM (Orthogonal Frequency Division Multiplexing) system based on a pilot signal through wavelet shrinkage denoising. Channel estimation for OFDM system is generally carried out by transmitting known pilot symbols in given positions of the frequency-time grid. Using interpolation methods the channel can be estimated from the coefficients extracted of those pilots. The proposed interpolation is an improved method for successive data schism and interpolation. This interpolation based on mean and variance to calculate the interpolated points between two known points. Simulation results show that the proposed interpolation can be controlled by β and ξ factor for the mean and variance respectively. Simulation results shows that the OFDM system over Wavelet de-noising filter will increase the performance of the system by 3–4 dB.