Title :
Polyphase filtered OFDM transmission system
Author :
Lee, C.S. ; Yoo, K.Y.
Author_Institution :
Sch. of Electr. Eng. & Comput. Sci., Hanyang Univ., Ansan, South Korea
fDate :
5/27/2004 12:00:00 AM
Abstract :
A polyphase filtered orthogonal frequency division multiplexing (PF-OFDM) technique is presented. The proposed structure uses a modified discrete Fourier transform transmultiplexer to achieve greater spectral efficiency than an OFDM system, while preserving backward compatibility with it. The prototype PF-OFDM filter has excellent time and frequency localisation properties, which make it possible to eliminate a guard interval and easily suppress interchannel interference.
Keywords :
OFDM modulation; adjacent channel interference; channel bank filters; discrete Fourier transforms; interference suppression; transmultiplexing; DFT transmultiplexer; PF-OFDM filter; backward compatibility; frequency localisation; guard interval elimination; interchannel interference; modified discrete Fourier transform transmultiplexer; orthogonal frequency division multiplexing; polyphase filtered OFDM transmission system; spectral efficiency; time localisation;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20040484
