Your Search Results

Use this resource - and many more! - in your textbook!

AcademicPub holds over eight million pieces of educational content for you to mix-and-match your way.

Experience the freedom of customizing your course pack with AcademicPub!
Not an educator but still interested in using this content? No problem! Visit our provider's page to contact the publisher and get permission directly.

Blind Channel Shortening for MC-CDMA Systems by Restoring the Orthogonality of Spreading Codes

By: Miyajima, T.; Kotake, M.;

2015 / IEEE


This item from - IEEE Transaction - Communication, Networking and Broadcast Technologies - This study considers blind channel shortening to mitigate the effects of inter-block interference and multiple-access interference in both uplink and downlink multicarrier code-division multiple-access systems. We derive the blind channel shortening methods by extending the blind channel equalization method previously proposed by Djebbar, Abed-Meraim, and Djebbari. The basic idea is to restore, at the frequency-domain equalizer output, the orthogonality of spreading codes, which is destroyed when interference is present. We show that the extended methods can perfectly shorten the channels and that the resulting effective channel is identical to the predetermined target channel thus avoiding channel estimation. Computer simulation results illustrate the effectiveness of the proposed methods.