offset carrier system
英 [ˈɒfset ˈkæriə(r) ˈsɪstəm]
美 [ˈɔːfset ˈkæriər ˈsɪstəm]
网络 间离载波系统; 偏置载波制
双语例句
- The primary content of this thesis is the synchronization algorithms of the OFDM system. Firstly, the impact of symbol timing offset and carrier frequency offset in system is analyzed quantitatively.
本文的主要研究内容是OFDM系统同步算法，首先定量分析了载波频偏和符号定时偏差对系统性能的影响； - The offset of carrier frequency can cause interference between subchannels in a multicarrier system.
对于多载波系统，载波频率的偏移会导致子信道之间产生干扰。 - However, OFDM system is very sensitive to symbol timing offset and carrier frequency offset, so accurate timing synchronization and frequency synchronization are necessary to OFDM system.
然而OFDM系统对于符号定时偏差和载波频率偏差十分敏感，因此精确的符号定时和频偏估计对于OFDM系统是极其必要的。 - Therefore, research on efficient and accurate carrier frequency offset estimation algorithms are very important for OFDM systems. Recently, research on carrier frequency offset estimation algorithms about OFDM system at home and abroad.
因此，研究高效、准确的载波频率偏移估计算法对OFDM系统非常重要。 - As a method of the adjustment of time offset, power information and carrier frequency offset in the uplink, ranging plays an important role in the system. There are three kinds of algorithms for the detection of ranging codes in the OFDMA system.
测距作为上行链路调整时间偏置、功率信息和载波频率的一种方法，对系统起了很大的作用。 - Frequency offset between the received carrier and local reference at the receiver may occur due to Doppler shifts and/ or oscillator instabilities after down conversion in digital communication system.
在数字通信系统中，由于接收机振荡器的不稳定性和多普勒频移等因素，使得接收信号的载波与发送信号载波之间存在频率偏差，经过相干解调下变频后得到的基带信号中通常含有载波频率偏移。 - In addition, a detailed theoretical analysis and simulation are employed to discuss the effect of timing offset, carrier offset, sampling offset and other non-idea factors on OFDM system.
通过理论推导与仿真详细分析了定时偏差、载波偏差以及采样偏差等多种非理想因素对OFDM系统的影响。 - Compared with the single-carrier systems, OFDM systems have a serious problem, which are very sensitive to the carrier frequency offset, that is to say, a smaller carrier frequency offset will degrade the system performance severely.
但与单载波系统相比，OFDM系统还存在一个严重的问题：对载波频率偏移十分敏感，较小的载波频率偏移就会导致OFDM系统性能急剧下降。