多用户信道

一种基于CDMA多用户信道信息的快速自适应波束成形接收机

Fast adaptive beamforming receiver based on multiuser channel estimates from a CDMA base station

在OFDM的认知无线电系统模型基础上，提出基于OFDM的多用户信道分配算法，并且从子载波分配算法和子载波功率分配算法两个角度给出算法实现过程。

On the basis of the novel system module , a channel allocation algorithm based on Multi-user OFDM was proposed . And the paper showed the algorithm into two parts : Sub-carrier allocation and Sub-carrier power allocation .

在Pauli算子的基础上建立量子多用户信道模型，给出利用Grover算法的多用户检测解决方法。

In this paper , the quantum Grover searching algorithm is introduced , and a quantum multi-user channel model based on Pauli operator is erected .

多用户信道编码定理

Coding theorem of multi-user channel

文中重点讨论了变信道、多用户信道、相关信源、边信息信道以及反馈和失真等方面的问题。

The focus is put on varying channel , multi-user channel , correlated sources and the sources and / or channels with side information , feedback and distortion .

多用户多信道基于Aloha的认知无线电系统的吞吐量分析与优化。

Throughput Analysis for a Multi-user , Multi-channel ALOHA Cognitive Radio System .

改进算法可以提高上行基于SRS信道估计质量，有助于下行选择适合当前信道状态的预编码码本，同时新算法保证了多用户的信道估计性能。

The new algorithm can improve the quality of the uplink channel estimation based on SRS and contributes to downlink precoding matrix selection based on the current channel state information .

多用户中继信道上的网络低密度校验码设计

Design of Network Low Density Parity Check Codes for Multiuser Relay Channels

仿真结果表明，该协议可以有效地调度多用户多信道的接入，具有很好的可扩展性。

Simulations show that the proposed protocol can effectively schedule the accessing of users and exhibit good scalability .

同时建立了虚拟信道方法，以时分制为基础实现多用户共享信道。

At the same time establish the virtual channel method , implement the multi-user share channel based on the TDM .

该文充分利用数字移动通信系统中的已知短序列，给出了一种半盲多用户共信道信号分离方法。

In this paper , a semi-blind closed-form co-channel signal separation method is proposed , which is based on two steps .

一种选择最大多用户分集MIMO信道调度方法及性能分析

An Selective Maximum Multi-user Diversity Scheduling Scheme in MIMO Channels and Performance Analysis

因此在解决无线多用户MIMO广播信道多用户干扰问题的主要方法是采用预编码技术。

However , the problem of user interference in MU-MIMO can be solved by precoding technique .

联合MAP多用户检测与信道解码的迭代多用户检测（MUD）技术可显著提高宽带移动CDMA系统的容量和性能。

The technique combining MAP-based multi-user detection ( MUD ) with channel decoding can greatly improve performance and capacity of broadband CDMA mobile communication systems .

随着通信技术和信息的发展，宽带语音将应用于视频会议，电话会议以及ISDN的多用户／多信道通信领域。

With the development of communications technology and information technology , wideband speech would be applied to videoconference , conference call , as well as to multi-user / multi-channel communications domain of ISDN .

本文着重研究了MGS编码的质量层分配算法、MGS码流在无线丢包网络中传输的不均等差错保护方案和在新兴的多天线多用户信道中传输的架构。本文首先研究了质量层分配算法。

The quality layer assignment scheme for MGS coding , unequal error protection scheme on MGS bitstream over wireless packet-erasure channel and MGS bitstream transmission framework over the emerging multi-antenna multi-user channel are investigated . Firstly , the quality layer assignment scheme for MGS coding is investigated .

一种新的多用户分集系统信道量化与反馈算法

A Novel Channel Quantization and Feedback Algorithm in Multiuser Diversity Systems

一种多用户联合检测信道估计新方法研究

Research on a New Algorithm of Channel Estimate of Multiuser Joint Detection

基于多用户分集的信道容量分析

Analysis of channel capacity based on multiuser diversity

其次，本文提出协作用户数目优化算法，并分析多用户感知多信道和多用户感知单信道的场景特点。

It analyzes the characteristics of multiple users sense multiple channels and multiple users sense single channel .

算法根据多径频率选择性衰落信道的瞬时特性，动态地为多用户分配子信道和传输比特数，并服从MA优化准则。

According to instantaneous characteristics of the multi-path frequency selective fading channels , the adaptive algorithm assigns the sub-channels and bits for multiuser submit based on MA optimization .

每次迭代过程中，多用户检测器和信道译码器都输出外信息作为下一次迭代的先验信息。

At each iteration , extrinsic information is extracted from the multiuser detector and the channel decoders and is then used as the prior information in the next iteration .

无线移动通信信道是一个多址多用户信道，而且存在多径衰落、时延扩展、频率扩展等问题。

The channel of wireless mobile communication is a multi-access and multi-user channel , and it has some problems , such as , multi-path fading , time delay spreading , frequency spreading .

该系统具有无中心组网、数字选呼、自动接续、多址用户多信道共用、链路分散控制等诸多技术特点，拥有广阔的实际应用前景和深入开发潜力。

The system has many technical characteristic , for example network without a centre controller , digital selective-calling , automatic call connection , multi-channel share for multiple access users , disperse Link control .

在多用户感知单信道场景下，不存在次用户频率切换操作，因此只需要考虑能量开销和感知准确度之间的关系。

In another situation of the multiple users detect single channel , it only need to consider the relationship between the energy cost and the spectrum sensing accuracy , because no channel switching is existed .

多用户感知多信道场景中，由于次用户数目有限，若平均分配给各信道进行协作感知，则会导致感知概率较低。

In the situation of multiple users sensing multiple channels , because of the second users ' number limiting , it will lead to a low sensing perception if allocating the second users to each channel equally .

无线网络中媒质接入控制协议（MediumAccessControlMAC）用于解决多个用户如何共享信道的问题，它对无线网络系统的性能有着决定性的影响。

The medium access control ( MAC ) protocol is used to control multi user share a wireless channel , it is a key of wireless communication system 's capability .

本文研究了CDMA系统在采用阵列天线接收时进行多用户联合检测的信道估计算法。

The channel estimate algorithm of joint detection for CDMA system when the array antenna is employed is studied in this paper .

仿真结果表明该方法不但有效可行，同时还可估算出多用户DS-CDMA系统的信道响应。

Simulations on computer show that the method is effective , feasible and can be used to estimate the channel 's response in DS - CDMA .

目前，由软输入软输出（SISO）多用户检测器和SISO信道译码器组成的迭代多用户接收结构，被认为是解决联合多用户检测和信道译码问题的有效方案。

The iterative receiver that mainly consists of the SISO ( Soft-In Soft-Out ) multiuser detector and the SISO channel decoder is considered as a feasible solution to the problem of joint detection and decoding .