Yayınlanmış 1 Ocak 2003 | Sürüm v1
Konferans bildirisi Açık

New receiver structures for subcarrier synchronization in OFDM systems over frequency-selective channels

Oluşturanlar

Açıklama

In this paper, subcarrier synchronization techniques for OFDM systems are studied. These techniques are evaluated for frequency dispersive, frequency nondispersive, time varying, and time invariant channels. DVB-T parameters are taken as reference. It has been observed that one needs an effective subcarrier synchronization measure in order to combat degrading effects of dispersive, time varying channels. Because of this reason, we propose new receiver structures to solve synchronization problems for such channels. In the proposed receiver structure, PLL trackers for subcarriers synchronization are used. The PLL's are operated by using an Expectation-Maximization(EM) based phase offset estimation algorithm. According to the performance evaluations made by computer simulations, the proposed receivers improve the system performance on a large scale.

Dosyalar

bib-6000648b-458e-46dd-9b70-c93f14d5632d.txt

Dosyalar (232 Bytes)

Ad Boyut Hepisini indir
md5:32da512391a61ad8ad635c04ca8f636e
232 Bytes Ön İzleme İndir