frequency offset

基本解釋

Digitized demodulation of multi-channel QPSK signals often can not proceed normally due to the occurrence of unacceptably large frequency-offset.
主要是解決數(shù)字接收機(jī)中，對(duì)多路QPSK信號(hào)解調(diào)時(shí)所存在的較大載波頻差的難題。
But because of the sensitivity to the carrier frequency-offset, very small frequency offset will destroy the performance of the OFDM system, badly.
但是，OFDM對(duì)載波頻偏非常敏感，很小的載波頻偏都會(huì)嚴(yán)重影響OFDM系統(tǒng)性能。
However, OFDM systems are very sensitive to frequency-offset. Therefore, it is necessary to estimate effectively and to compensate frequency-offset in the systems.
可是OFDM的一個(gè)固有缺點(diǎn)是其對(duì)頻率偏移非常敏感，因此如何對(duì)基于OFDM的傳輸分集系統(tǒng)進(jìn)行有效的頻偏估計(jì)和校正是一個(gè)值得探討的問題。

頻偏
Effects caused by carrier frequency offset over successive OFDM symbols are investigated in this subject.
在本專題中，我們研究了載波頻偏對(duì)連續(xù)OFDM符號(hào)的影響。
頻率偏差
This paper studies the impact of the frequency characteristics and frequency offset of power system.
本文研究了電力系統(tǒng)頻率特性和頻率偏差的影響。
頻率偏離
In this paper, the timing error is obtained by the autocorrelation characteristic of the pseudo noise sequence (PN-sequence) based on the special pilot symbols; then the frequency offset can be estimated grounded on the correlation of pilot symbols.
本文根據(jù)設(shè)計(jì)的特殊導(dǎo)頒符號(hào),通過偽隨機(jī)序列的自相關(guān)特性得到定時(shí)誤差;然后通過導(dǎo)頻符號(hào)之間的相關(guān)性,估計(jì)出頻率偏離。
頻率偏置
頻率差距
頻率偏差值