modulation diversity的例句大全

this paper presents a differential modulation diversity used in the presence of unknown multi-path.

该文给出了一种未知频率选择性衰落信道下的差分分集调制方法。

performance analysis of turbo product coded modulation based on bit interleaving and modulation diversity

基于比特交织和调制分集的Turbo乘积编码调制系统性能

Space time coded modulation has been shown to efficiently use transmits diversity in Raleigh fading channel. Then, the investigation indicates that decreasing the amounts of subbands, and utilizing the diversity characteristic adequately in frequency domain of OFDM is an effective approach to reduce the performance degradation.

文中接着通过研究表明，在子带自适应编码调制中，减少选取子带的个数，充分利用OFDM频域上的分集特性是一种可以降低信道时变带来性能恶化的有效途径。

Its crux techniques lie on Initial Synchronization and Rake Multi-path Diversity Recept ion 、 Multi-carrier Modulation 、 Software Radio 、 Intelligent Antenna 、 Multi-user Detection and Asynchronous Transfer Mode etc.

其关键技术有初始同步与Rake多径分集接收、多载波调制、软件无线电、智能天线、多用户检测、异步传输等6种。

the phase diversity reception of the amplitude modulation signal, the application of quadrature amplitude modulation ( qam) signal in the coherent optical system, and the automatic polarization control in the coherent optical system are studied in this thesis.

本文主要对调幅信号的相位分集接收，正交幅度调制（QAM）信号在相干光通信系统中的应用，以及相干光系统中的自动偏振控制技术进行了研究。

An adaptive modulation technique for multiuser MIMO systems with multiuser diversity is proposed.

摘要提出一种在MIMO系统中采用自适应调制实现可变速率多用户分集的方案.

An adaptive orthogonal frequency division multiplexing ( OFDM) scheme is described with a simple space time coded transmit diversity for frequency selected fading channel by combining adaptive modulation with spacial diversity.

将自适应调制技术和空间分集技术有机地结合起来，提出了一种与简单空时编码发射机分集相结合的恒定比特率自适应正交频分复用（OFDM）方案。

Space Time Coding combining diversity, coding and modulation, can effectively resist multipath fading in the channel and improve the capability of the system, so it will probably become the key technology of the 3rd generation of mobile communication system.

空时编码技术综合考虑分集、编码和调制，能有效对抗信道中的多径衰落和提高系统容量，必将成为第三代移动通信系统中的关键技术。

Differential detected turbo product coded modulation and diversity receptions of the TPC-MDPSK in correlated Rayleigh-fading channels are studied.

研究了差分检测Turbo乘积编码调制和相关Rayleigh衰落信道中Turbo乘积编码MDPSK信号的分集接收的实现方法。

Space time coded modulation has been shown to efficiently use transmits diversity in Raleigh fading channel.

空时编码调制是一种充分利用分集特性克服信道衰落的一种编码调制方式。