Title :
On the equalization scheme for ZP-OFDM using MMSE criteria over deep fading channels
Author :
Sivakumar, P. ; Vidhya, S. ; Rajaram, M.
Author_Institution :
Anna Univ., Chennai, India
Abstract :
OFDM is a special technique of FDM. In OFDM carrier frequency differs from each other by integer multiples of base carrier frequency making the carrier being mutually orthogonal to each other. But OFDM suffers from the spectral null problem. On the other hand Zero-padded OFDM recovers the symbol but its complexity is high in equalizer. Finally in this paper the problem of spectral null and complexity is solved by means of DFT code. The simulation result has also been proven better by means of complexity when compared with ZP-OFDM Overlap and Add scheme.
Keywords :
OFDM modulation; codes; fading channels; least mean squares methods; DFT code; MMSE criteria; OFDM carrier frequency; ZP-OFDM; base carrier frequency; deep fading channel; equalization scheme; spectral null problem; zero-padded OFDM; Adaptive systems; Decoding; Doppler effect; Europe; Frequency division multiplexing; OFDM; Signal to noise ratio; Carrier frequency; DFT Code; OFDM; Overlap and Add Scheme; Spectral nulls;
Conference_Titel :
Signal Processing, Communication, Computing and Networking Technologies (ICSCCN), 2011 International Conference on
Conference_Location :
Thuckafay
Print_ISBN :
978-1-61284-654-5
DOI :
10.1109/ICSCCN.2011.6024522
