Wireless LAN White Papers
Bandwidth Efficient Channel Estimation Using Super-Imposed Pilots in OFDM Systems
Overview This paper proposes a channel estimation algorithm using super-imposed pilots for OFDM systems. The pilot symbols are added linearly to the modulated data symbol at a fraction of the total transmit power, making the method spectrally efficient. This paper presents a series of iterative and non-iterative receivers in which complexity is traded for performance. In particular, a high complexity non-iterative receiver that achieves the theoretically lowest BER and a low complexity iterative receiver that show near-optimal performance are presented. This paper observes that the performance of the receiver is independent of the channel's Doppler frequency and delay spread. Finally, the paper computes an analytic bound for the bit error rate of the proposed non-iterative receiver.
| Publisher | Institute of Electrical and Electronics Engineers | File Format | |
|---|---|---|---|
| Date Published | October 2006 | ||
| Format | White Papers | ||
| Topics | |||
-
Did you find this white paper useful? 2 out of 3 users found this white paper useful
White Paper RSS
Download
Register
