Title :
Frequency domain equalization for single-carrier broadband wireless systems
Author :
Falconer, David ; Ariyavisitakul, Sirikiat Lek ; Benyamin-Seeyar, Anader ; Eidson, Brian
Author_Institution :
Dept. of Syst. & Comput. Eng., Carleton Univ., Ottawa, Ont., Canada
fDate :
4/1/2002 12:00:00 AM
Abstract :
Broadband wireless access systems deployed in residential and business environments are likely to face hostile radio propagation environments, with multipath delay spread extending over tens or hundreds of bit intervals. Orthogonal frequency-division multiplex (OFDM) is a recognized multicarrier solution to combat the effects of such multipath conditions. This article surveys frequency domain equalization (FDE) applied to single-carrier (SC) modulation solutions. SC radio modems with frequency domain equalization have similar performance, efficiency, and low signal processing complexity advantages as OFDM, and in addition are less sensitive than OFDM to RF impairments such as power amplifier nonlinearities. We discuss similarities and differences of SC and OFDM systems and coexistence possibilities, and present examples of SC-FDE performance capabilities
Keywords :
OFDM modulation; broadband networks; business communication; delays; equalisers; frequency-domain analysis; modems; multipath channels; OFDM; RF impairments; SC radio modems; broadband wireless access; business environments; efficiency; frequency domain equalization; low signal processing complexity; multicarrier solution; multipath delay spread; orthogonal frequency-division multiplexing; power amplifier nonlinearities; radio propagation environments; residential environments; single-carrier broadband wireless systems; single-carrier modulation; Broadband amplifiers; Delay; Frequency division multiplexing; Frequency domain analysis; Intersymbol interference; Modems; OFDM modulation; Power amplifiers; Quadrature amplitude modulation; Telecommunication standards;
Journal_Title :
Communications Magazine, IEEE
