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码分多址
相关语句
  cdma
     MC-CDMA is an integrated technology of OFDM and CDMA.
     多载波码分多址(MC-CDMA)技术是OFDM与CDMA技术结合方案小的一种。
短句来源
     MC-CDMA is an integrated technology of OFDM and CDMA.
     多载波码分多址(MC-CDMA)技术是OFDM和CDMA技术结合方案中的一种。
短句来源
     MC-CDMA is an integrated technology of OFDM and CDMA.
     多载波码分多址(MC-CDMA)技术是OFDM与CDMA技术结合方案中的一种。
短句来源
     Multi-Access Interference(MAI),multi-path fading and near-far effect are the predominant factors that determine the performance of receivers in Code Division Multiple Access(CDMA) system, but MAI is not inevitable.
     在码分多址(Code Division Mutiple Access,CDMA)系统中,多址干扰(Multi-Access Interference,MAI)、多径衰落及远近效应是影响接收机通信性能主要因素,然而多址干扰不是不可避免的。
短句来源
     In direct sequence/code division multiple access (DS/CDMA) communication system, different users employ distinct spreading codes but transmit at the same time and frequency.
     在直接序列扩频码分多址(DS/CDMA:direct sequence/code division multiple access)通信系统中,不同用户指定不同的扩频码波形,不同用户的信号在同一频带内同时传输。
短句来源
更多       
  code division multiple access
     2.5Gbit/s Optical Code Division Multiple Access Communication System
     2.5 Gbit/s光码分多址通信系统研究
短句来源
     Optical code division multiple access(OCDMA) technology is one of hot research points in optical communication.
     光码分多址(Optical Code Division Multiple Access,OCDMA)技术是目前光通信研究领域的热点之一。
短句来源
     Experiment on 2.5 Gbit/s symbol overlapping fast frequency-hopping optical code division multiple access(SO-FFH OCDMA) system with single user is designed and demonstrated.
     设计并实现了单用户、数据速率2.5 Gbit/s的码位重叠快跳频光码分多址(SO-FFH OCDMA)实验系统。
短句来源
     Experiment on 2.5 Gbit/s Symbol Overlapping Optical Fast Frequency-Hopping Code Division Multiple Access System
     2.5 Gbit/s码位重叠快跳频光码分多址实验系统
短句来源
     Multi-Access Interference(MAI),multi-path fading and near-far effect are the predominant factors that determine the performance of receivers in Code Division Multiple Access(CDMA) system, but MAI is not inevitable.
     在码分多址(Code Division Mutiple Access,CDMA)系统中,多址干扰(Multi-Access Interference,MAI)、多径衰落及远近效应是影响接收机通信性能主要因素,然而多址干扰不是不可避免的。
短句来源
更多       
  cdma overlay
     Interference Rejection in CDMA Overlay Systems Using Time-Transform Domain Distribution
     基于时变换域分布的码分多址复用系统干扰抑制技术
短句来源
  “码分多址”译为未确定词的双语例句
     4. Compare the performance of OFDM, DSSS and DS-CDMA techniques.
     4.对OFDM技术和DSSS技术以及直接序列码分多址(DS-CDMA)进行了性能比较。
短句来源
     A 3-D Code for OCDMA System
     用于光码分多址系统的一种3-D地址码
短句来源
     UMTS is the third generation mobile communication system adopting WCDMA technology.
     UMTS(通用移动通信系统)是采用WCDMA(宽带码分多址)技术的第三代移动通信系统。
短句来源
     Study on Performance of WDM/OCDMA Networks
     波分复用/光码分多址网络性能研究
短句来源
     For the code-division multiple-access environment,the power amplifier delivers 28 dBm power output and provides power-added efficiency(PAE) of 34.8% and an adjacent channel power ratio(ACPR) less than-35 dBc at 28 dBm.
     对于码分多址环境,功率放大器提供28 dBm的功率输出,实现34.8%的功率附加效率(PAE),另外,在28 dBm的输出功率下,邻道功率泄漏比(ACPR)小于-35 dBc。
短句来源
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  cdma
New Family of Spreading Sequences for Quasi-Synchronous CDMA Systems
      
Multiuser detection for DS-CDMA systems in non-Gaussian channels
      
Only CDMA2000 1X EV-DO or enhanced data rate for GSM evolution (EDGE), which adopts the Time Division Multiple Access (TDMA) mode, can provide the high-speed data rate for a wireless access.
      
This allows us to maintain the throughput increase of a multi-carrier code division multiple access (MC-CDMA) system with minimal loss in performance and no bandwidth expansion.
      
Such bases can efficiently be employed in designing CDMA broadband communication systems where the basis signals are used as information carriers.
      
更多          
  code division multiple access
The results show that among the proposed sequences, there are subclasses of sequences with a zero-correlation zone, which can be used in quasi-synchronous-code division multiple access systems.
      
This allows us to maintain the throughput increase of a multi-carrier code division multiple access (MC-CDMA) system with minimal loss in performance and no bandwidth expansion.
      
A new decoder of synchronous optical code division multiple access systems using segmented correlation
      
In Direct-Sequence Code Division Multiple Access(DS-CDMA) mobile communication systems, it is very important to obtain accurate estimation of the channel parameters, especially that of the propagation delay.
      
A robust interference canceller for Multi-Carrier Code Division Multiple Access (MC-CDMA) using Orthogonal Frequency Division Multiplexing (OFDM) in Rayleigh fading is proposed.
      
更多          
  cdma overlay
The low level of mutual interference between the existing cellular telephone system and the B-CDMA overlay system is shown.
      
Space-Time Optimum Combining for CDMA Overlay for Personal Communications Systems
      
MMSE RAKE Reception for Asynchronous DS/CDMA Overlay Systems and Frequency-Selective Fading Channels
      


In this paper, the performance of CDMA satellite communication system is analysed. Several important problems such as system detection performance, multiple access capability, effect of the address code parameters on the system performance, compatibility between large and small stations and simultaneous sharing of spread spectrum and other signals, are also discussed. The experimental results via "Symphonic" satellite which conform with the analysis are presented.

本文对码分多址(CDMA)卫星通信系统中直接序列(DS)调制方式的性能进行了估算;讨论了系统设计中的几个主要参数,系统检测性能、系统同时工作的多地址能力、地址码参数对系统性能的影响、同一个转发器中大小站同时工作及扩频信号与其它信号的兼容条件,并给出了通过“交响乐”卫星的实验结果。实验结果与分析基本相符。

The aperiodic and periodic correlation properties of pseudorandom sequences have been discussed. The particular correlation parameters were considered, Such as odd crosscorrelation function, Odd autocorrelation function and optimalphase of periodic sequence. All of those are important for choice signature sequences in the spectrum code-division multiple-access communication systems.

本文主要讨论了伪随机序列的非周期和周期相关特性。研究了诸如奇互相关函数、寄自相关函数和周期序列的最佳相位等特殊相关参量。所有这些参量对于在扩展频谱码分多址通信系统中,指导特征序列的选取有着极为重要的意义。

Methos for constructing subsets of orthogonal complementary pairs with sequence length of arbitrary powers of two are presented.Orthogonal comple- mentary pairs and sets,and completely orthogonal complementary sets,are expected to apply to multiplex,code division multiple access (CDMA) and spread spectrum communication systems.

本文提出了构造长度为2的任意次幂的正交互补对子集的一般方法,还提出了由正交互补对构成正交互补组子集和全正交互补组子集的方法。正交互补对、正交互补组和全正交互补组可望在多路、码分多址和扩频通信系统中得到应用。

 
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