在三大标准中atsc为单载波传输系统,能较好支持固定接收,峰均值比较小。
In three standards, ATSC is the single carrier transmission system, it is easy to support the fixed receiving, its peak average value quite being small.
本文将软件无线电技术和OFDM多载波调制技术相结合,提出了基于软件无线电平台的OFDM多载波传输系统方案。
This paper mainly focuses on the combination of OFDM system with the Software Radio technology and presents OFDM transceiver scheme based on Software Radio platform.
该改进方案改善了电力线载波通信系统的传输性能。
It can improve the transmission performances of power line carrier wave communication systems.
为克服低压电力线信道的频率选择性和时变性,系统采用正交多载波方式传输信息。
Orthogonal Multi-Carrier Modulation(OMCM) is adopted to overcome the frequency selectivity and time variation of low-voltage power line channel.
提出了一种新的正交频分多路(OFDM)传输系统定时和载波频率捕获联合算法。
This paper describes a novel joint acquisition algorithm of timing and carrier frequency for burst orthogonal frequency division multiplexing (OFDM) transmission system.
在智能家居控制系统中有很多种信号传输方式,在电力线载波方式中应用X-10协议进行信号传输是最先进也是最实用的一种。
The signal transmitted methods have many kinds in smart-house control system, using X-10 protocol transmitting signal in power-line carrier wave application is most advanced and practicality method.
数字传输系统的关键在于载波同步和信道均衡。
The key of digital transmission system lies in carrier synchronization and channel equalization.
公开一种在多输入多输出(MIMO)单载波频分多址(SC -FDMA)系统中用于执行上行链路传输的方法和设备。
A method and apparatus for performing uplink transmission in a multiple-input multiple-output (MIMO) single carrier frequency division multiple access (SC-FDMA) system are disclosed.
与传统的单载波调制方式相比,OFDM技术可以有效地抵抗信道多径干扰,提高系统的传输速率。
Compared with the traditional scheme of single-carrier modulation, OFDM technology has more effective anti-jamming ability and achieves higher transmission rate.
他是较为完备的移动接收和传输技术,可以大大降低每个子载波内的符号间干扰,节省了用于均衡的系统开销。
It is a mature receiving and transmitting technique, which can lower the interference of symbol in each carrier and economize the system expense used for balance.
主要介绍卫星电视伴音副载波数据传输系统的组成,以及主要实现技术。
This paper introduces composition and realizing technology of satellite TV aural sub-carrier data transmission system.
通过研究有效的无线资源分配策略,可以提高多载波系统的传输性能。
Through the study of efficient allocation strategy, the performance of multi-carrier system can be improved.
理论推导和仿真结果表明,COFDM调制技术适合在高压电力线载波通信中使用,在明显的提高数据传输率的同时降低误码率并增强系统可靠性。
Proved by the theoretic deriving and simulation result, the COFDM modulation technology is well suitable for high voltage PLC with a high transmission speed, low BER and high reliability.
提出了多载波码分多址测控通信系统的概念。该系统不但能完成伪码精确测距,而且能进行高速数据传输。
This paper puts forward the concept of MC CDMA system, that can both measure distance accurately with PN code and transmit High speed data.
它结合了OFDM和CDMA的优点,在高速数据传输时,其抗符号间干扰的性能明显优于传统的单载波cdma系统。
It combines the advantages of OFDM and CDMA, and its capability of combating ISI is obviously better than that of a single-carrier CDMA for the high data rate transmission.
但该方法占用专门的子载波或时隙,降低了系统的频谱利用率和信息传输速率。
But this method occupies the special sub-carriers or time slots and then reduces the system spectrum efficiency and data transmission rate.
以电能表系统为中心,通过其载波接口,三表数据以低压电力载波方式传输到区内集中器。
The power meter is designed to have the carrier interface through which the three meter's data is transmited into the concentrator by the way of low power line carrier.
一定的传输距离和发射光功率情况下,不同的子载波数存在一个最佳的光调制指数,使得系统载噪比最大;
Under a certain deliver distance and the light power, the different sub-carries number to exist a best optical modulation index, making the system's carrier-to-noise ratio biggest.
数值仿真结果表明:多载波频率分集CDMA系统在无线宽带数据传输中性能大大优于CDMA,具有良好的应用前景。
The numerical results of simulation show that the ability of MC-CDMA for wireless broadband data transmission is much better than CDMA, therefore it has a better perspective for business application.
系统控制核心是单片机,信号的传输采用电力载波通讯技术。
The core of the controlling system is the single-chip computer. and the conveying of the signal adopts the communication technology of powerline carrier wave.
该文提出了一种适用于时域正交频分复用数字传输(TDS - OFDM)系统的基于保护间隔相似特性的高精度载波细同步算法。
This paper presents a fine carrier synchronization algorithm based on the similarities of the guard interval for Time-domain synchronous OFDM (TDS-OFDM) systems.
在LTE通信系统中,随着许多新技术的应用,运用更高的载波频率和更加灵活的带宽配置,实现上百兆赫每秒的传输已经成为可能。
In LTE telecommunication systems, with the use of lots of novel technologies such as higher carrier frequency, more flexible bandwidth, it can provide hundreds of Mbps bandwidth.
单载波及多载波太比特光传输系统;
Terabit/s multi-carrier / single-carrier optical transmission systems.
基于子载波边际效用,提出了一种针对实时业务的资源优化分配算法,在满足其传输速率和误比特率的前提下,有效地降低了系统所需要的发射功率。
After that, a resource optimization method for real-time traffics is proposed, which minimizes the required transmit power while guaranteeing the QoS requirement of real-time traffics.
基于子载波边际效用,提出了一种针对实时业务的资源优化分配算法,在满足其传输速率和误比特率的前提下,有效地降低了系统所需要的发射功率。
After that, a resource optimization method for real-time traffics is proposed, which minimizes the required transmit power while guaranteeing the QoS requirement of real-time traffics.
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