Description: cdma_codes产生扩频码随机、H、需要的朋友可以下来-cdma_codes generated random spreading codes, H, the need to see friends down Platform: |
Size: 1024 |
Author:林宇 |
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Description: cdma系统matlab仿真，在两个用户的背景下采用了直接扩频码实现扩频解扩，bpsk调制解调，程序已经运行过，没有问题！-cdma system matlab simulation, in the context of two users using a direct spread spectrum spreading codes realize despreading, bpsk modem, the program has been run before, no problem! Platform: |
Size: 2048 |
Author:陈超 |
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Description: 该程序可以实现直扩通信系统中扩频码的生成，可以通过键入本原多项式直接输出生成的扩频码，方便灵活。-The program can be achieved in DS spread spectrum communication system to generate code, you can direct the output type primitive polynomial generated spreading codes, convenient and flexible. Platform: |
Size: 12288 |
Author:qingyuanbao |
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Description: 简单的单用户ds-cdma系统仿真，包含六个m文件，m序列作为扩频码。-Simple single-user ds-cdma system simulation, including six m file, m sequences as spreading codes. Platform: |
Size: 3072 |
Author:weiwei |
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Description: 这个仿真程序用于实现DS-CDMA通信系统仿真,包含三种扩频码的选择，QPSK调制解调，瑞利信道衰落等。-The simulation program used to implement DS-CDMA communication system simulation, including the choice of three types of spreading codes, QPSK modulation and demodulation, Rayleigh fading channel and so on. Platform: |
Size: 25600 |
Author:william |
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Description: orthogonal variable spreading factor (OVSF) is an implementation of Code division multiple access (CDMA) where before each signal is transmitted, the spectrum is spread through the use of a user s code. User s codes are carefully chosen to be mutually orthogonal to each other.
These codes are derived from an OVSF code tree, and each user is given a different, unique code. An OVSF code tree is a complete binary tree that reflects the construction of Hadamard matrices. Platform: |
Size: 2048 |
Author:deep |
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Description: 从多普勒载波频偏对CDMA接收
信号的影响入手，提出了分段匹配滤波器和循环累加码捕获环路相结合的方法进
行扩频码的捕获，并对该方法的性能进行了分析和仿真。
-Doppler frequency offset from the carrier signal on the CDMA receiver to start the impact of proposed sub-cycle accumulation matched filter code acquisition loop and a combination of methods of spreading codes to capture, and the method of performance analysis and simulation. Platform: |
Size: 1025024 |
Author:赵亮 |
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Description: this file is about spreading codes in cdma detection -this file is about spreading codes in cdma detection ... Platform: |
Size: 173056 |
Author:ahmed |
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Description: Demo Speed通信协议MATLAB实现。基于动态帧时隙ALOHA(DFSA)协议与正交可变扩频因子码(OVSF)作为扩频码的码分多址技术相结合的超高频RFID系统-Demo Speed Communication Protocol MATLAB. (DFSA) agreement with orthogonal variable spreading factor code (OVSF) UHF RFID system based on dynamic frame slot ALOHA CDMA technology spreading codes as a combination of Platform: |
Size: 90112 |
Author:李世民 |
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Description: 编写了MATLAB程序生产和扩频码进行仿真，仿真程序从发送方完成通道的接收端，得出在不同的扩频码，在不同的信噪比即误码率的图形比较直接序列扩频通信系统原理，改善系统性能的度-Written MATLAB program to produce and direct sequence spread spectrum communication system principle of spreading codes for simulation, emulation program to complete the channel from the sender to the receiver end, draw graphics comparison at different spreading code, the bit error rate under different SNR i.e., the degree of improvement of the system performance Platform: |
Size: 6144 |
Author:吴晓 |
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Description: CDMA Simulation Using MATLAB
This program models a simple implementation of CDMA technology. It considers multiple bit data streams sent by any number of senders across a common channel. Each sender uses a unique code word, given by the Walsh set, to encode its data, send it across the channel, and then perfectly reconstruct the data at the receiver.
The simulation utilizes these simplifications:
1. The individual data streams share the same bit length.
2. The code words are determined using the Walsh set to create orthogonal code words.
3. The spreading factor M of each code word is identical.
4. All users (data streams and codes) are synchronized in time.
5. Set-up and hold times of real-world systems are ignored.
6. The channel through which the data passes is ideal.-CDMA Simulation Using MATLAB
This program models a simple implementation of CDMA technology. It considers multiple bit data streams sent by any number of senders across a common channel. Each sender uses a unique code word, given by the Walsh set, to encode its data, send it across the channel, and then perfectly reconstruct the data at the receiver.
The simulation utilizes these simplifications:
1. The individual data streams share the same bit length.
2. The code words are determined using the Walsh set to create orthogonal code words.
3. The spreading factor M of each code word is identical.
4. All users (data streams and codes) are synchronized in time.
5. Set-up and hold times of real-world systems are ignored.
6. The channel through which the data passes is ideal.
Platform: |
Size: 1024 |
Author:maryam |
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Description: CDMA Simulation Using MATLAB
This program models a simple implementation of CDMA technology. It considers multiple bit data streams sent by any number of senders across a common channel. Each sender uses a unique code word, given by the Walsh set, to encode its data, send it across the channel, and then perfectly reconstruct the data at the receiver.
The simulation utilizes these simplifications:
1. The individual data streams share the same bit length.
2. The code words are determined using the Walsh set to create orthogonal code words.
3. The spreading factor M of each code word is identical.
4. All users (data streams and codes) are synchronized in time.
5. Set-up and hold times of real-world systems are ignored.
6. The channel through which the data passes is ideal.-CDMA Simulation Using MATLAB
This program models a simple implementation of CDMA technology. It considers multiple bit data streams sent by any number of senders across a common channel. Each sender uses a unique code word, given by the Walsh set, to encode its data, send it across the channel, and then perfectly reconstruct the data at the receiver.
The simulation utilizes these simplifications:
1. The individual data streams share the same bit length.
2. The code words are determined using the Walsh set to create orthogonal code words.
3. The spreading factor M of each code word is identical.
4. All users (data streams and codes) are synchronized in time.
5. Set-up and hold times of real-world systems are ignored.
6. The channel through which the data passes is ideal.
Platform: |
Size: 1024 |
Author:maryam |
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Description: these peak-reducing signals are built by using spreading codes that are either dynamically selected those users that are known to be idle, or deliberately reserved a priorifor PAPR reduction purposes. The concept of adding orthogonal signals for peak power mitigation has been previously proposed to reduce PAPR in Discrete MultiTone and OFDM transmissions[13,27], and also in CDMA downlink systems [28]. -these peak-reducing signals are built by using spreading codes that are either dynamically selected those users that are known to be idle, or deliberately reserved a priorifor PAPR reduction purposes. The concept of adding orthogonal signals for peak power mitigation has been previously proposed to reduce PAPR in Discrete MultiTone and OFDM transmissions[13,27], and also in CDMA downlink systems [28]. Platform: |
Size: 11264 |
Author:emman |
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Description: Here's an example of a MATLAB script that simulates a basic CDMA (Code Division Multiple Access) system. This script assumes that the user has already generated spreading codes for each user, and that the codes are stored in a matrix called `spread_codes`, where each row represents a different user and each column represents a chip in the code. The script also assumes that the data to be transmitted is stored in a vector called `data`. Platform: |
Size: 105703 |
Author:mustafa1970 |
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