Multiple Pre-Rake Filtering Based on the Predicted Channel Impulse Response in the Transmitter and a Rake Combiner in the Receiver for TDD/DS-CDMA Mobile Communication Systems

URI http://harp.lib.hiroshima-u.ac.jp/hiroshima-cu/metadata/4066
ファイル
タイトル
Multiple Pre-Rake Filtering Based on the Predicted Channel Impulse Response in the Transmitter and a Rake Combiner in the Receiver for TDD/DS-CDMA Mobile Communication Systems
著者
氏名 AHN Chang-Jun
ヨミ アン チャンジュン
別名 安 昌俊
氏名 SASASE Iwao
ヨミ ササセ イワオ
別名 笹瀬 巌
キーワード
CDMA
Rake receiver
pre-Rake system
time division duplex (TDD)
抄録

The pre-Rake system is known as a technique in TDD DS/CDMA system to reduce the mobile complexity and achieve the same BER performance like Rake receiver. The pre-Rake system itself is not optimum, since the channel impulse responses of uplink and downlink are slightly different in TDD system, so the signal- to-noise ratio (SNR) can be maximized with a matched filter based Rake receiver, which has not been considered in the conventional pre-Rake system. Furthermore pre-Rake system is sensitive to the Doppler frequency. Even though the pre-Rake system has the ability to suppress other user interference, it is not efficient to maximize the received signal in high Doppler frequency. However, Rake combiner is utilized for the detection method in our proposed system. So the maximized signal can keep the orthogonality better than the pre-Rake system and our proposed system can compensate the Doppler frequency effect. From these reasons, our system achieves better BER performance than that of the pre-Rake system with increasing the number of users in high Doppler frequency.

査読の有無
掲載雑誌名
IEICE TRANSACTIONS on Communications
E85-B
10
開始ページ
2282
終了ページ
2291
出版年月日
2002-10-01
出版者
電子情報通信学会(IEICE)
ISSN
0916-8516
NCID
AA10826261
本文言語
英語
資料タイプ
学術雑誌論文
著者版フラグ
出版社版
権利情報
copyright©2002 IEICE
関連URL
旧URI
区分
hiroshima-cu