Wireless LAN White Papers
Detrimental Effects of Filtering in an OFDM System Using Pilot Based Channel Estimation
Overview The effects of performing channel estimation in AWGN and Rayleigh channels using non-ideal interpolating and decimating filters on an OFDM system are investigated. Pilots are used to estimate the combined response of the channel and the filters. By making use of standard Gaussian approximation to the interference for the AWGN channel, the paper illustrates how to estimate the symbol error rate of a M-QAM system. By using an improved Gaussian approximation for the Rayleigh fading channel for error rate estimation, this paper shows that this is equivalent to making the assumption that the interference is Gaussian noise experienced in a Rayleigh fading channel.
| Publisher | Institute of Electrical and Electronics Engineers | File Format | |
|---|---|---|---|
| Date Published | August 2002 | ||
| Format | White Papers | ||
| Topics | |||
-
Did you find this white paper useful?
White Paper RSS
Download
Register
