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[Communication-MobileCP0803_RAKESELECTOR

Description: UWB超宽带信号。PAM调制RAKE接受机MATLAB源代码。可以用在仿真中-UWB Ultra-wideband signal. PAM modulation RAKE receiver MATLAB source code. Can be used in simulation
Platform: | Size: 1024 | Author: rw | Hits:

[matlabyuanchengxu

Description: 程序清单A中收录了产生PPM-TH和PAM-DS这两个信号源的所有函数;程序清单B中收录了加性高斯白噪声(AWGN)信道建模,正交和非正交单脉冲PPM-TH接收机结构,以及反极性PAM-DS单脉冲接收机结构仿真所需的所有函数。-A list of procedures resulting in a collection of PPM-TH and PAM-DS these two signal sources all function procedure includes a list of B in the additive white Gaussian noise (AWGN) channel modeling, orthogonal and non-orthogonal single pulse PPM-TH receiver structure, as well as the anti-polarity PAM-DS monopulse receiver structure simulation all the necessary functions.
Platform: | Size: 18432 | Author: feifei | Hits:

[Communication-MobilePAMRECEIVER

Description: Simulates the receiver for 2PAM DS UWB signals and computes the average BER
Platform: | Size: 1024 | Author: 和三 | Hits:

[Program docqam8_nograycode

Description: An 8-QAM communications channel simulation in Simulink, constructed from a 16-QAM model and using an I,Q correlation receiver. QAM (quadrature amplitude modulation) is a method of combining two amplitude-modulated (AM) signals into a single channel, thereby doubling the effective bandwidth. QAM is used with pulse amplitude modulation (PAM) in digital systems, especially in wireless applications. In a QAM signal, there are two carriers, each having the same frequency but differing in phase by 90 degrees (one quarter of a cycle, from which the term quadrature arises). One signal is called the ‘I’ signal, and the other is called the ‘Q’ signal. Mathematically, one of the signals can be represented by a sine wave, and the other by a cosine wave. The two modulated carriers are combined at the source for transmission. At the destination, the carriers are separated, the data is extracted from each, and then the data is combined into the original modulating information. -An 8-QAM communications channel simulation in Simulink, constructed from a 16-QAM model and using an I,Q correlation receiver. QAM (quadrature amplitude modulation) is a method of combining two amplitude-modulated (AM) signals into a single channel, thereby doubling the effective bandwidth. QAM is used with pulse amplitude modulation (PAM) in digital systems, especially in wireless applications. In a QAM signal, there are two carriers, each having the same frequency but differing in phase by 90 degrees (one quarter of a cycle, from which the term quadrature arises). One signal is called the ‘I’ signal, and the other is called the ‘Q’ signal. Mathematically, one of the signals can be represented by a sine wave, and the other by a cosine wave. The two modulated carriers are combined at the source for transmission. At the destination, the carriers are separated, the data is extracted from each, and then the data is combined into the original modulating information.
Platform: | Size: 11264 | Author: Griffin Wright | Hits:

[Program docextended_reciever

Description: Bit Error Rate analysis of an Extended Receiver for Rectangular PAM. The performance of a digital communication system in the presence of additive white Gaussian noise (AWGN) can be assessed by the measurement of the bit error rate (BER). The Simulink model provided is a rectangular polar pulse amplitude modulation (PAM) baseband system with an AWGN channel and an extended sample and hold receiver with a low pass filter. An extended receiver has an odd number of sample and hold circuits. What remains to be answered is if such a receiver would provide a more desirable BER than that of a simple S/H receiver.-Bit Error Rate analysis of an Extended Receiver for Rectangular PAM. The performance of a digital communication system in the presence of additive white Gaussian noise (AWGN) can be assessed by the measurement of the bit error rate (BER). The Simulink model provided is a rectangular polar pulse amplitude modulation (PAM) baseband system with an AWGN channel and an extended sample and hold receiver with a low pass filter. An extended receiver has an odd number of sample and hold circuits. What remains to be answered is if such a receiver would provide a more desirable BER than that of a simple S/H receiver.
Platform: | Size: 11264 | Author: Griffin Wright | Hits:

[matlabsinc_pam

Description: BER Performance of Variable Width Sinc PAM with a Simple Receiver in AWGN
Platform: | Size: 9216 | Author: Griffin Wright | Hits:

[Windows Develop77433652yuanchengxu

Description: 这些MATLAB的M文件分为两部分:程序清单A中收录了产生PPM-TH和PAM-DS这两个信号源的所有函数;程序清单B中收录了加性高斯白噪声(AWGN)信道建模,正交和非正交单脉冲PPM-TH接收机结构,以及反极性PAM-DS单脉冲接收机结构仿真所需的所有函数。-The MATLAB M-file is divided into two parts: A list of procedures in the collection of produce PPM-TH and PAM-DS two signal sources all functions Listing B, contains an additive white Gaussian noise (AWGN) channel construction mode, orthogonal and non-orthogonal single-pulse PPM-TH receiver structure, as well as anti-polarity PAM-DS receiver structure simulation of single-pulse all the necessary functions.
Platform: | Size: 18432 | Author: 蔡陆军 | Hits:

[Industry researchSignal

Description: 分析了在超宽带通信系统中的扩频干扰,并用两种通用的调制技术实现了对提出的抗干扰方法的仿真-he ultra wideband (UWB) interference to direct sequence spread spectrum (DSSS) receiver is analyzed. Two popular UWB modulation schemes, the time hopping pulse position modulation (TH-PPM) and time hopping pulse amplitude modulation (TH-PAM), are considered. The pulse repetition rate (T’RR) of UWB signal and the freqnency hand of the DSSS play the primary roles in the BER performance of the DSSS receiver in the presence of UWB interference. The UWB signal parameters raising the interference to DSSS receiver are discussed. The characteristics of an aggregation of multiple UWB signals are somehow different from that of a single UWB device, especially for the TB-PPM scheme, where discrete spectral lines maybe exist in the band of DSSS receiver. The system parameters of TH-PPM such as the modulaiion index and maximum shift incurred hy the time hopping code determine the amplitude of the discret
Platform: | Size: 283648 | Author: 张洋 | Hits:

[Otherqam

Description: Quadrature amplitude modulation (QAM) is a modulation scheme in which two sinusoidal carriers, one exactly 90 degrees out of phase with respect to the other, are used to transmit data over a given physical channel. One signal is called the I signal, and the other is called the Q signal. Because the orthogonal carriers occupy the same frequency band and differ by a 90 degree phase shift, each can be modulated independently, transmitted over the same frequency band, and separated by demodulation at the receiver. For a given available bandwidth, QAM enables data transmission at twice the rate of standard pulse amplitude modulation (PAM) without any degradation in the bit error ratio (BER).
Platform: | Size: 508928 | Author: Flo | Hits:

[matlabtber2

Description: Quadrature amplitude modulation (QAM) is a modulation scheme in which two sinusoidal carriers, one exactly 90 degrees out of phase with respect to the other, are used to transmit data over a given physical channel. One signal is called the I signal, and the other is called the Q signal. Because the orthogonal carriers occupy the same frequency band and differ by a 90 degree phase shift, each can be modulated independently, transmitted over the same frequency band, and separated by demodulation at the receiver. For a given available bandwidth, QAM enables data transmission at twice the rate of standard pulse amplitude modulation (PAM) without any degradation in the bit error ratio (BER).
Platform: | Size: 3072 | Author: Flo | Hits:

[Industry researchuwb

Description: Review of current short/medium range wireless standards and expected challenges for future systems • Introduction to Ultra-wideband (UWB) Technology – What is it? – Possible benefits and challenges • Performance example of M-PAM and DS-SS UWB systems with various RAKE receiver structures • Can UWB coexist with other systems? – Review of FCC regulatory process and interference studies – Other considerations -Review of current short/medium range wireless standards and expected challenges for future systems • Introduction to Ultra-wideband (UWB) Technology – What is it? – Possible benefits and challenges • Performance example of M-PAM and DS-SS UWB systems with various RAKE receiver structures • Can UWB coexist with other systems? – Review of FCC regulatory process and interference studies – Other considerations
Platform: | Size: 256000 | Author: anna | Hits:

[matlabDigital-baseband-signal

Description: 数字信号的基带传输 PAM的功率谱密度 数字基带的接收 匹配滤波器 升余弦滚降系统 基带信号眼图-Digital baseband digital signal baseband transmission power spectral density of the PAM receiver matched filter raised cosine the system baseband signal eye diagram
Platform: | Size: 5120 | Author: | Hits:

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