Title :
Adjacent channel interference in an OFDM system
Author :
Gudmundson, Mikael ; Anderson, Per-Olof
Author_Institution :
Ericsson Radio Syst., Stockholm, Sweden
Abstract :
We present expressions for adjacent channel interference calculations for OFDM systems. The expressions presented are general in the sense that they are valid for any kind of transmission window, guard time and symbol time. As two examples the interference expressions are given for rectangular windows and Hanning windows. We also present a method for deriving the interference for a WSSUS channel model. We find that the Hanning window with no guard time reduces the effects of the time and frequency synchronization errors, as well as of the time and Doppler spread, compared to the rectangular window with a guard time of 1/8 of the symbol time
Keywords :
Doppler effect; adjacent channel interference; frequency division multiplexing; synchronisation; telecommunication channels; Hanning windows; OFDM system; WSSUS channel model; adjacent channel interference; frequency synchronization errors; guard time; interference expressions; rectangular windows; symbol time; time and Doppler spread; time synchronization errors; transmission window; Digital communication; Doppler shift; Frequency division multiplexing; Frequency synchronization; Interchannel interference; Intersymbol interference; OFDM; Power system modeling; Scattering; Transmitters;
Conference_Titel :
Vehicular Technology Conference, 1996. Mobile Technology for the Human Race., IEEE 46th
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-3157-5
DOI :
10.1109/VETEC.1996.501445
