Coherent rake reception of direct sequence code division multiple access (DS-CDMA) signals requires accurate channel estimation in a frequency-selective fading channel. This paper studies a code-multiplexed pilot-assisted frequency-domain channel estimation using FFT/IFFT, which has a good tracking capability against fast fading and can reduce the effect of noise and interpath interference (IPI). The average bit error rate (BER) performance of rake combining in a time- and frequency-selective fading channel is theoretically evaluated and confirmed by computer simulation. It is shown that the frequency-domain channel estimation using code-multiplexed pilot is very robust against fast fading.
|ジャーナル||IEEE Vehicular Technology Conference|
|出版ステータス||Published - 2004 12 1|
|イベント||2004 IEEE 60th Vehicular Technology Conference, VTC2004-Fall: Wireless Technologies for Global Security - Los Angeles, CA, United States|
継続期間: 2004 9 26 → 2004 9 29
ASJC Scopus subject areas
- コンピュータ サイエンスの応用