Title :
OFDM signals based on shaping filters
Abstract :
In this paper we formulate OFDM signals based on explicit pulse shaping filtering. A rectangular pulse in time domain for shaping filtering is most often used, but it has SNR loss compared to a shaping filter with a brick-wall frequency domain filter since in practice both require guard time or guard band. Our formulation of OFDM signal based purely on shaping filter may provide a common platform, and both can be implemented efficiently using DFT and commutating polyphase filters.
Keywords :
OFDM modulation; discrete transforms; filters; frequency-domain analysis; pulse shaping; time-domain analysis; OFDM signals; brick-wall frequency domain filter; commutating polyphase filters; discrete frequency transforms; pulse shaping filtering; rectangular pulse; shaping filters; time domain; Bandwidth; Filtering; Filters; Frequency domain analysis; Interference; OFDM modulation; Propagation losses; Pulse shaping methods; Signal generators; Signal to noise ratio;
Conference_Titel :
Military Communications Conference, 2009. MILCOM 2009. IEEE
Conference_Location :
Boston, MA
Print_ISBN :
978-1-4244-5238-5
DOI :
10.1109/MILCOM.2009.5380010