Title :
Adaptive equalization structures for multitone CDMA systems
Author :
van de Wiel, O. ; Vandendorpe, L.
Author_Institution :
Telecommun. & Remote Sensing Lab., Katholieke Univ., Leuven, Belgium
Abstract :
The combination of multitone transmission (also known as orthogonal frequency division multiplexing (OFDM)) with direct sequence spread spectrum (DS/SS) is suitable for the design of a multiuser system robust against channel impairments. For high bit rate applications in indoor channels, the need for equalization is high, because guard intervals would lead to poor spectral efficiency. This paper presents a comparison between a recursive least square (RLS) scheme and a least mean square (LMS) algorithm, both extended for the linear equalization of OFDM/DS systems
Keywords :
code division multiple access; DS-SS; DS/SS; LMS; OFDM; OFDM/DS systems; RLS; adaptive equalization structures; channel impairments; direct sequence spread spectrum; guard interval; high bit rate applications; indoor channels; least mean square algorithm; linear equalization; multitone CDMA systems; multitone transmission; multiuser system; orthogonal frequency division multiplexing; recursive least square algorithm; spectral efficiency; Adaptive equalizers; Bit rate; Intersymbol interference; Least squares approximation; Least squares methods; MIMO; Multiaccess communication; OFDM; Remote sensing; Resonance light scattering;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 1994. Wireless Networks - Catching the Mobile Future., 5th IEEE International Symposium on
Conference_Location :
The Hague
Print_ISBN :
90-5199-193-2
DOI :
10.1109/WNCMF.1994.530802
