Title :
A multiple sub-carrier selection (MSCS) diversity architecture with reduced receiver complexity for wireless OFDM applications
Author :
Sun, Yang ; Gudem, Prasad ; Larson, Lawrence E.
Author_Institution :
Dept. of Electr. & Electron. Eng., California Univ., San Diego, La Jolla, CA, USA
Abstract :
A simple multiple sub-carrier selection (MSCS) diversity combining receiver architecture for 802.11 OFDM wireless applications is proposed. This architecture can improve the system diversity performance with nearly the hardware simplicity of selection combining. A complex analog filter bank is inserted into antenna RF front end, which is also part of channel selection filter. By detecting the power level at each complex filter output, we can choose the optimum band from each antenna filter to maximize the receiver signal output. The added hardware complexity of the analog/RF receiver is minimal, and only a single A/D and DFT block are required.
Keywords :
OFDM modulation; adaptive antenna arrays; communication complexity; diversity reception; radio receivers; radiofrequency filters; wireless LAN; A/D and DFT block; IEEE 802.11 OFDM wireless applications; MSCS diversity combining receiver architecture; analog filter bank; analog/RF receiver; antenna RF front end; channel selection filter; complex filter output power level; hardware complexity; hardware simplicity; multiple sub-carrier selection diversity architecture; optimum antenna filter band selection; receiver complexity; receiver signal output; selection combining; system diversity performance; wireless OFDM applications; Channel bank filters; Diversity reception; Fading; Filter bank; Frequency domain analysis; Hardware; OFDM; Radio frequency; Receiving antennas; Wireless LAN;
Conference_Titel :
Vehicular Technology Conference, 2004. VTC2004-Fall. 2004 IEEE 60th
Print_ISBN :
0-7803-8521-7
DOI :
10.1109/VETECF.2004.1400041
