We are currently experiencing intermittent issues impacting performance. We apologize for the inconvenience.
By Topic

A novel method used for the performance analyzing of channel estimation in time-varying fast fading channel - equivalent channel analysis method

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

4 Author(s)
Yonghui Li ; Beijing Univ. of Aeronaut. & Astronaut., China ; Yong Zhong Zou ; Qishan Zhang ; Daoben Li

In a time-varying fast-fading channel, due to the influence of amplitude fading and fast phase changing, the performance of a QAM system deteriorates seriously; there are also restraints on using high-dimension modulation in fast mobile communications. To solve this problem, many estimation methods have been presented. The process of channel estimation is practically that of compensating the channel characteristic. Thus, analyzing the performance of channel estimation methods also analyzes the equivalent channel after compensation. Characteristics of equivalent channel by compensation of some estimation is conducted in the course of equivalent channel estimation. Various channel estimations essentially estimate and compensate the channel with the channel correlation. The correlation of amplitude can be analyzed by amplitude ratio, while that of phase by phase difference. Hence, above all, we analyze the channel estimation performance by calculating the probability distribution of the amplitude ratio and phase difference at two random times. We name this method equivalent channel analysis method. By using this method, system performance is only the function of the Doppler shift and channel correlation coefficient that depend on the channel estimation method. We only need to calculate the correlation coefficient of two neighbouring symbols to obtain the relation between error probability and Doppler shift as used in channel estimation, thus simplifying the analysis of system performance.

Published in:

Military Communications Conference, 2001. MILCOM 2001. Communications for Network-Centric Operations: Creating the Information Force. IEEE  (Volume:2 )

Date of Conference: