Summary
Asia-Pacific Conference on Communications
2008
Session Number:16-AM1-C
Session:
Number:1569116013
Pilot Power Optimization for Channel Estimation in OFDM System
Shuichi Ohno, Shinji Hosokawa, Kok Ann Donny Teo,
pp.-
Publication Date:2008/10/14
Online ISSN:2188-5079
DOI:10.34385/proc.27.1569116013
Summary:
For Orthogonal Frequency Division Multiplexing (OFDM) system, training preamble for channel estimation is studied when null subcarriers are embedded in each OFDM symbol. The optimal training preamble that minimize the mean squared channel estimation error is numerically found by casting the design problem into a semidefinite programming problem. A design example under the same setting as IEEE802.11a is provided to verify the efficacy of our proposal as well as to show that the preamble of IEEE802.11a is almost optimal.