智能天线引入空分多址的概念,通过用户空间位置的差异对其进行分离。
The space division multiple access (SDMA) is introduced, and users can be distinct from each other through their special location.
对于联合交织多址的OFDM系统,分析了交织多址OF DM信号的峰均比分布,并提出一种基于可变交织器设计的峰均比抑制方法。
For interleave division multiple access (IDMA) combined OFDM system, the PAPR of the transmitted signal is analyzed, and a PAPR reduction method based on variable interleaver designing is proposed.
介绍了一种点对多点无线数据传输系统的设计,提出了一种基于时分多址的“随机延时”防通信碰撞协议,并给出了该防碰撞协议和相关CRC编码的软件实现方法。
The design of a point-to-points wireless data traffic system is presented, including a random delay anti-collision protocol, the implementation of this protocol and CRC coding by software.
该SNEP将采用MPM1000网络中心波形卫星调制解调器,为战术机动作战提供所需的多频时分多址接入带宽技术。
The SNEP will employ the MPM1000 Net Centric Waveform Satellite Modem to provide Multi-Frequency-Time Division Multiple Access Bandwidth on demand technology for tactical mobile operations.
小灵通使用TDMA(分时多址)/(时分复用)作为其接入无线网络的方法,且声讯编码以自适应差分脉冲编码调制方式调制,速率为每秒32千比特。
PHS uses TDMA/TDD for its radio channel access method, and 32 kbit/s ADPCM for its voice codec.
第3章对AIS系统的关键技术自组织时分多址(SOTDMA)及其工作流程进行了较为深入的研究。
The 3rd chapter conducted more thorough research to the AIS system essential technology (SOTDMA) and its the work flow from the organization.
智能天线和干扰消除技术是从不同角度抑制码分多址系统多址干扰的方法,二者各有其特点及不足之处。
Smart antennas and interference cancellation are two different kinds of schemes to restrain multi-access interference, and each has its characteristic and defect.
数值结果表明,由于使用多用户联合检测技术抑制多址干扰,随着激活用户数的增加,小区的有效覆盖范围几乎保持不变;
Results show that cell coverage almost remains constant as the number of active users in the cell increases due to the usage of joint detection technology to suppress multiple access interference.
将该方法用于多用户检测问题的实验结果表明,采用这种混合算法训练的RBF网络结构精简,具有很好的抗多址干扰的性能。
The application of the algorithm in multiuser detection problems demonstrates that the RBF network trained with the algorithm is concise in structure and has good anti-MAI performance.
仿真结果验证了本文方法具有良好的检测性能,可以在克服信道衰落的同时抑制多址干扰。
Simulation results demonstrate that the proposed method offers higher detecting performance and is capable of combating both channel fading and multiple-access interference.
分别对不同用户数目的系统进行计算机仿真,结果表明,采用本算法后,能有效地抑制多址干扰,极大地提高了系统的性能。
Simulation is performed for different number of users, and results show that this algorithm can efficiently suppress multiple access interference and improve system performance.
在DS - CD ma系统中,联合译码的迭代多用户检测是克服多址干扰增加系统容量的有效方法。
It has been proved that iterative multiuser detection with decoding is a very effective way to increase system capacity in DS-CDMA systems.
多址干扰是影响码分多址系统性能的关键问题。
Multi-access interference is the key problem which restricts the performance of CDMA (code division multiple access) system.
本文提出一种时分多址跳频信号的捕获方法。
An acquisition method of frequency hopping signal in a TDMA system is presented in this paper.
空分多址技术在未来的民用或军用移动通信系统中具有很大的应用潜力。
The SDMA technique has great potential to be applied in the future civilian or military mobile communication system.
本文通过概率分析,着重对这种系统的多址干扰、自干扰特性进行了研究并给出了误码率的数值结果。
By statistical analyzing, the characters of the MAI and self-interference are studied and the numerical results of the error bit rate are given.
基于广播信道及多址接入信道的概念,提出了一种新的半双工中继协议,并对该协议下的资源分配问题进行了研究。
Based on the concepts of broadcast channel and multiple access channel, a novel half-duplex relay strategy was proposed, and optimal resource allocation under this strategy was investigated.
随着人们对通信需求的不断增长,带来了如何有效地利用频率问题,同时也产生了越来越多的多址技术。
With the increased need for communications come a need for the efficient use of tile frequency spectrum and the more multiple access technique.
目前,在分布式无线网络中使用的多址协议大多是基于带冲突避免和冲突分解的随机多址接入技术。
Nowadays, most multiple access methods in the distributed wireless networks are based on the random multiple access with collision avoidance and collision resolution.
近年来,正交频分多址接入系统做为一种新的多址接入技术受到了极大关注。
Recently, Orthogonal Frequency Division multiple access (OFDMA) as a new multiple access technology has received a lot of attention.
通过几种多址方式的比较,选出最适合于高性能、低价格卫星数据通信系统的优越方案。
By comparing several multiple access modes, an optimal scheme is chosen which is suitable for a cost-effective satellite data communication system.
该文首先分析了超宽带发射信号实现多址通信的原理。
In this paper, the principle of ultra-wideband multiaccess communication is analyzed with the transmitting signal.
传统的CDMA技术存在严重的多址干扰现象,使得信道的频谱效率不能达到最佳状态。
The traditional CDMA technology has serious multi address interference phenomenon, so the frequency spectrum efficiency of the channel can′t reach the optimal state.
CDMA蜂窝移动通信系统是一种采用多址技术的通信系统,即采用不同的地址码来区分用户、基站和信道。
CDMA mobile communication system adopts multiple access techniques which means different address codes are used to distinguish users, base stations and channels.
提出了一种用于时分多址突发通信系统中的IJF - OQPS K调制信号解调方法。
A demodulation approach of IJF-OQPSK signal for the burst communication system is presented in this paper.
码分多址系统中的多用户信号检测,能有效地减少多址干扰、增加系统的容量、改善远近效应。
Multiuser detection can efficiently reduce Multi-access Interference in CDMA system. At the same time, it can increase system capability and improve near-far effect.
本文给出了有反馈多址信道容量区域的一个极限表示。
This paper gives a limit representation of the capacity region of multi-access channels with feedback.
在这种情况下,通常还不知道其它用户的扩频码和数据信息时,利用定向天线的空间分割方法是减小多址干扰的简单有效措施。
Considering that spread sequences and data of other users cannot be also attained, the space division receiving could be a simple and effective method to reduce MAI.
首先论述该检测具有较强的多址干扰抑制能力,其性能不受解调信号的接收功率影响。
The results show that the performance of the detector is not affected by the received power of the demodulated signal.
多用户信号检测是研究码分多址通信网中多址干扰抑制方法的理论,近年来日益得到人们的重视。
Multiuser signal detection is a theory concerning the multiple access interferences in CDMA networks, which is given more and more attention recently.
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