With reasonable constraint and the assistant of special - designed pilot sequence for each user , the discrete fourier transform ( dft ) - based uplink channel estimation algorithm can achieve good estimation accuracy without sacrificing much system capacity 在合理约束条件以及为每个用户特殊设计的导频序列辅助下,基于离散傅里叶变换( dft )的上行信道估计算法能够获得较好的估计精度,同时无需牺牲过多的系统容量。
Ultra - wideband ( uwb ) pulse communication is a very different communication technique from others . it has characteristics of high system capacity , low power spectral densities , exceptional multiparth immunity , simple structure and low probability of detection 超宽带( uwb )脉冲通信是一种与其它技术有很大不同的无线通信技术,它具有通信容量大、辐射功率密度低,抗多径干扰,结构简单和保密性好等优点。
Cdma is the mainstream technology in the future telecommunication , power control technology is one of the key techniques of cdma , it is significant to employ power control for diminishing the interference of users , guaranteeing the quality , and increasing system capacity Cdma是未来移动通信发展的主流技术,功率控制技术又是cdma核心技术之一,采用功率控制是为了减小用户间的干扰,保证用户质量,增加系统容量。
The multi - cell cdma system capacity analysis is discussed in the paper . the related close expressions and the performance plots of multi - cell cdma system ' s capacity are presented , which clearly show the relationship of the capacity and voice users , and data users , and activity factors 研究和总结了多小区单业务和多业务直扩系统的容量。给出了语音,数据用户与系统容量的关系,语音与数据激活因子与容量的关系等。
This thesis first discusses the reason of introducing the technology of smart antenna from the angle of increasing the system capacity . further , it introduces the theory , advantages of smart antenna and its evolution , and criteria and algorithms of the beamforming technology 论文首先从提升系统容量的角度讨论了引入智能天线技术的原因,进一步介绍了智能天线的原理、优点、发展以及波束形成技术的准则和算法。
The other part is about the development of gps receiver , including design of high - speed data transmission module design , printed circuit board drawing and adjusting it . the module increases the system capacity and makes real time application more available 其二是参与了gps接收机的研制,完成了高速数传模块的电路原理设计,印制板电路制作以及部分调试工作,其实现增加了指挥监控通信系统的容量,增强了系统的实时性。
Simulation results show the significant potential of mimo in increasing the system capacity . ( 3 ) cooperating with the 863 project team , varieties of outfield testing are carried out . the valuable data got from the testing sufficiently verifies the potential of mimo ( 3 )配合863计划项目组,在mimo试验平台上进行了大量的外场测试,获得了一系列有价值的数据,对数据的分析充分验证了mimo技术在提高系统性能方面的潜力。
Multi - user detection is an efficient interference suppression technique for 3g that can reduce the multi - access interference ( mai ) and improve system capacity . recently , blind multi - user detection without requiring information of interference users has attracted considerable attention and interests 近年来,只利用期望用户的观测数据,而不需要干扰用户的信息就可以抵抗多址干扰、进行检测的盲多用户检测技术成为研究热点。
The emergence of multiple - input multiple - output ( mimo ) technology meets the demand of multimedia applications and high speed wireless access . researches indicate that the mimo can improve the performance of wireless system prominently , such as system capacity , data rate , and frequency efficiency 为了满足未来移动通信系统大容量、高速率的需求,提高频谱利用率,学术界提出了多天线发送和多天线接收的多输入多输出( mimo )系统的概念。
Through the adjustment and optimization of the parameter , the proposed algorithm can guarantee the qos of the real - time service and maximize the system capacity at the same time . in order to demonstrate the performance of the proposed algorithm , we compare our algorithm with m - lwdf 通过参数的调整与优化,该算法可以保证实时业务的qos要求,并且可以在减少实时业务分组时延和增大非实时业务吞吐量之间寻找最佳的平衡点。即尽可能的优化系统吞吐量。