Title :
Orthogonal frequency division multiplexing performance in delay and Doppler spread channels
Author :
Harvatin, David T. ; Ziemer, Rodger E.
Author_Institution :
Dept. of Electr. & Comput. Eng., Colorado Univ., Colorado Springs, CO, USA
Abstract :
Orthogonal frequency division multiplexing (OFDM) is examined via digital computer simulation. Bit error performance of OFDM in a doubly spread channel is examined, and the effects of varying the guard interval and the number of carriers are demonstrated. The use of simulation as a design tool when doubly spread channel performance cannot be modeled mathematically is demonstrated. Simulations reveal that the designer has to strike a balance between the number of carriers and the guard interval in order to optimize performance and resource utilization
Keywords :
Doppler effect; Rayleigh channels; coding errors; delays; error statistics; fading; frequency division multiplexing; modulation; Doppler spread channels; Doppler spread multipath; OFDM modulation; OFDM performance; Rayleigh fading channels; bit error performance; carriers; delay spread channels; design tool; digital computer simulation; doubly spread channel; guard interval; modem; orthogonal frequency division multiplexing; performance optimization; resource utilization; Computational modeling; Delay; Frequency division multiplexing; Intersymbol interference; OFDM modulation; Personal communication networks; Springs; TV broadcasting; Transmitters; Wideband;
Conference_Titel :
Vehicular Technology Conference, 1997, IEEE 47th
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-3659-3
DOI :
10.1109/VETEC.1997.605837
