Description: WCDMA物理层详解,对下行物理信道结构,上行物理信道结构以及信道间定时关系作了非常详细的描述.-Detailed WCDMA physical layer of the downlink physical channel structure, uplink physical channel structure as well as the timing relationship between channels given a very detailed description. Platform: |
Size: 579584 |
Author:mingongjia |
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Description: CDMA业务信道卷积编码实现，根据上下行信道区分生成不同码率的卷积码序列，original_sequence是原始输入序列，channel_select是信道选择参数，其中下行码率为1/2，上行信道为1/3 -CDMA business channel convolutional coding to achieve, according to the distinction between upper and lower line to generate a different channel bit rate of the convolutional code sequence, original_sequence is the original input sequence, channel_select is channel selection parameters, which downlink bit rate of 1/2, upstream channel for the 1/3 Platform: |
Size: 1024 |
Author:fisher |
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Description: CDMA业务信道卷积解码实现，根据上下行信道区分生成不同码率的卷积码序列，original_sequence是原始输入序列，channel_select是信道选择参数，其中下行码率为1/2，上行信道为1/3 -CDMA business channel decoder Convolutional achieve, according to the distinction between upper and lower line to generate a different channel bit rate of the convolutional code sequence, original_sequence is the original input sequence, channel_select is channel selection parameters, which downlink bit rate of 1/2, upstream channel for the 1/3 Platform: |
Size: 1024 |
Author:fisher |
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Description: WCDMA物理层matlab仿真程序，包含信道编码，交织，速率匹配，调制，扩频，信道模型，RACK接收机和相应的解码程序。-A simulation of the 3GPP FDD proposal for 3G wireless. The simulation can run on Simulink or as a stand alone C-coded program. It includes the channel encoding, interleaving, rate matching, modulation, spreading(channelization), a channel model, a RAKE receiver, and the corresponding decoding functions. Both the downlink and uplink have been modelled. Platform: |
Size: 901120 |
Author:杜建成 |
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Description: 几点说明：
1、source_main.m为主函数，qpsk.m和spread.m为子函数；
2、在matlab工程目录下运行source_main.m即可；
3、为方便大家理解，特以P-CCPCH信道的处理进行了举例，若大家认为资料有用的话请回帖，
我会将整个WCDMA下行信号源的matlab代码提供给需要的人；
4、为方便初学者学习，特提供了我自己开发时参考的3GPP资料，并在关键位置做了记号。
-Some explanations: 1, source_main.m main function, qpsk.m and spread.m as Functions 2, matlab project directory can be run source_main.m 3, to facilitate us to understand, especially for P-CCPCH channel processing of the example, if we consider the information useful, please Replies, I will put the WCDMA downlink signal source matlab code available to people in need 4, for the convenience of beginners to learn, especially when providing a reference to my own development 3GPP information, and in key positions in the mark. Platform: |
Size: 205824 |
Author:卢婷 |
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Description: This article presents downlink initial synchronization
and cell identification algorithms for long term evolution (LTE) of third-generation (3G) mobile communication systems, which are based on synchronization channel (SCH) and cell specific pilot symbols, respectively. Platform: |
Size: 504832 |
Author:HamidReza Mirsalari |
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Description: OFDM下行的仿真1、产生要传输随机数；
2、进行调制；
3、串并转换；
4、进行IFFT操作（代码中有用到共轭对称向量的IFFT为实数进行简化计算）；
5、增加循环前缀；
6、并串转换；
7、输出前滤波；
8、增加信道噪声（加性高斯白噪声）；
9、接收端串并转换；
10、去除循环前缀；
11、进行FFT变换；
12、信号解调；
13、误比特率计算；
-OFDM downlink simulation 1, have to be transmitted random number 2, the modulation 3 series and transforms 4, the IFFT operation (code useful to conjugate symmetric vector of the IFFT of real numbers to simplify calculations) 5, the increase in circulating prefix 6, and string conversion 7, the output before the filter 8, increased channel noise (additive white Gaussian noise) 9, the receiver string and conversion 10, removal of cyclic prefix 11, the FFT transform 12 , the signal demodulation 13, bit error rate Platform: |
Size: 112640 |
Author:刘洋 |
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Description: LTE下行链路信道估计，两发两收天线。基于导频的LS加插值仿真-LTE downlink channel estimation, two rounds of the two received antenna. Pilot-based simulation of LS plus interpolation Platform: |
Size: 95232 |
Author:如歌 |
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Description: ＷＣＤＭＡ ＦＤＤ 物理层ｍａｔｌａｂ仿真-The WCDMA Physical Layer Demo consists of an end-to-end (transmitter-to-receiver) simulation of the Frequency Division Duplex (FDD) Downlink physical layer for several Dedicated Channels (DCH) as specified by the 3GPP standard (Release 99).
The current ZIP file includes three different models: channel coding, spreading and modulation and the complete physical layer. Some of the functionalities included in the models are: channel coding and decoding, interleaving, rate matching, mapping to physical channel, spreading, modulation and Rake receiver.
To run the model, unzip the file and type wcdmademos.
Platform: |
Size: 1679360 |
Author:hao |
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Description: 该文件是LTE的信道模型(matlab),包括上行链路信道模型和下行链路信道模型-This file is LTE channel model (matlab), including uplink channel model and downlink channel model Platform: |
Size: 3072 |
Author:yang |
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Description: LTE下行信道估计，采用LTE-Advanced帧结构，非常适合于研究物理层信道估计的研究生。-LTE downlink channel estimation, the use of LTE-Advanced frame structure is very suitable for the study of the physical layer channel estimation graduate students. Platform: |
Size: 13312 |
Author:wulibin |
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Description: 实现了TD-LTE系统上下行结合的程序，包括信道估计、导频插入等，最后衡量系统性能是衡量系统的误码率。-It implemented the process of TD-LTE,including uplink and downlink.It contains channel estimation,pilot inserting and so on.At last,it eatimated the BER performance. Platform: |
Size: 124928 |
Author:燕子 |
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Description: channel estimation for ofdm systems, in lte ofdm i s used on downlink, so estimation has to be near to real Platform: |
Size: 10240 |
Author:asim |
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Description: In a multiple transmit antenna, single antenna per receiver downlink channel with limited channel state feedback, we consider the following question: given a constraint on the total system-wide feedback load, is it referable to get low-rate/coarse channel feedback from a large number of receivers or high-rate/high-quality feedback from a smaller number of receivers? Acquiring feedback from many receivers allows multi-user diversity to be exploited, while high-rate feedback allows
for very precise selection of beamforming directions. We show that there is a strong preference for obtaining high-quality feedback, and that obtaining near-perfect channel information from as many receivers as possible provides a significantly larger sum rate than collecting a few feedback bits from a large number of users. Platform: |
Size: 2106368 |
Author:xinpha |
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Description: 对于多波束卫星的上行链路和下行链路信道进行了建模，提供了function文件，可直接使用。(The uplink and downlink channels of multi-beam satellites are modeled, and function files are provided, which can be used directly.) Platform: |
Size: 2048 |
Author:ending fly |
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Search - downlink channel