Description: 书\"Simulation and software radio for mobile communications\"的源代码matlab版，从基本的bpsk,qpsk,qam到实际的ofdm系统，cdma链路，mac层仿真分析，可以全面的了解通信系统。-"Simulation and software radio for mobil e communications "source code version of Matlab, from basic BPSK. QPSK, QAM OFDM to the actual system, cdma Chains, mac-simulation analysis, a comprehensive understanding of communications systems. Platform: |
Size: 90649 |
Author:尹浩 |
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Description: 书"Simulation and software radio for mobile communications"的源代码matlab版，从基本的bpsk,qpsk,qam到实际的ofdm系统，cdma链路，mac层仿真分析，可以全面的了解通信系统。-"Simulation and software radio for mobil e communications "source code version of Matlab, from basic BPSK. QPSK, QAM OFDM to the actual system, cdma Chains, mac-simulation analysis, a comprehensive understanding of communications systems. Platform: |
Size: 90112 |
Author:尹浩 |
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Description: This project aim was to build wireless software modem for data communication
between two computers using an acoustic interface in the voice frequency range (20Hz–
20,000Hz). The transmitting antenna is a speaker (frequency response of: 90Hz –
20,000Hz) and the receiving antenna is a microphone (frequency response of: 100Hz –
16,000Hz). The test files used as information files were text files.
This goal was attained both in an incoherent scheme and in a coherent scheme.
Build under Matlab code, our modem uses OFDM (orthogonal frequency division
multiplexing) modulation, synchronization by LMS sequence, channel estimation (no
equalizer) via pilot tones. The symbols are either PSK or ASK for a constellation size of
2 or 4. To optimize the probability of error, these symbols were mapped using Gray
mapping.
Report-This project aim was to build wireless software modem for data communicationbetween two computers using an acoustic interface in the voice frequency range (20Hz-20000Hz). The transmitting antenna is a speaker (frequency response of: 90Hz-20000Hz) and the receiving antenna is a microphone (frequency response of: 100Hz-16000Hz). The test files used as information files were text files.This goal was attained both in an incoherent scheme and in a coherent scheme.Build under Matlab code, our modem uses OFDM ( orthogonal frequency divisionmultiplexing) modulation, synchronization by LMS sequence, channel estimation (noequalizer) via pilot tones. The symbols are either PSK or ASK for a constellation size of2 or 4. To optimize the probability of error, these symbols were mapped using Graymapping.Report Platform: |
Size: 559104 |
Author: |
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Description: To fully utilize the available spectrum for a wireless communication
system it is feasible to adapt to different situations
on the channel. In this paper a flexible OFDM
transmitter is presented together with basic theory behind
OFDM transmission. It is shown that high flexibility can
be obtained with a reasonable amount
Flexible baseband transmitter for OFDM
of additional hardware.
Part of the design, the FFT-processor, has already
been fabricated and measurement results are presented.-To fully utilize the available spectrum for a wireless communicationsystem it is feasible to adapt to different situationson the channel. In this paper a flexible OFDMtransmitter is presented together with basic theory behindOFDM transmission. It is shown that high flexibility canbe obtained with a reasonable amount Flexible baseband transmitter for OFDMof additional hardware.Part of the design, the FFT-processor, has alreadybeen fabricated and measurement results are presented. Platform: |
Size: 54272 |
Author: |
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Description: OFDM信号在光纤无线通信系统中传输性能的研究，包括不同频率的4QAM、16QAM，是毕设资料，非常珍贵。-OFDM signal in optical wireless communication system transmission performance in the study, including different frequencies 4QAM, 16QAM, complete set of information is very valuable. Platform: |
Size: 105472 |
Author:Ruby |
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Description: Technical features of the wireless network generation antenna schemes and the modulation systems. A look on the specifications the MIMO-OFDM 4G communication system. Platform: |
Size: 406528 |
Author:jenna |
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Description: 正交频分复用技术是近年来发展起来的新技术,在高速无线数据传输领域有很大的应用前景。文章在分析和总结相关文献的基础上,介绍了正交频分复用(OFDM)技术的发展历史,讨论了正交频分复用技术的基本原理和实现方法。通过分析表明,在高速无线通信中OFDM对于消除符号间干扰(ISI),降低系统的复杂度等方面具有很大优势。正交频分复用(OFDM)是一种多载波宽带数字调制技术,它能有效地克服传输中的多径干扰和消除码间串扰,适合于高速率的地面信道视频传输。本文就OFDM技术进行了较为详尽的分析,并对OFDM的传输特性进行了基于FFT算法实现的MATLAB软件模拟及模拟结果分析。 -OFDM is a new technology developed in recent years, high-speed wireless data transmission in the field of great applications. This paper analyzes and summarizes the basis of relevant literature, describes orthogonal frequency division multiplexing (OFDM) technology, history, orthogonal frequency division multiplexing discussed the basic principles and implementation methods. The analysis shows that in the high-speed wireless communication in OFDM symbol for the elimination of interference (ISI), and so reduce the complexity of the system has great advantages. Orthogonal frequency division multiplexing (OFDM) is a multi-carrier wideband digital modulation techniques, can effectively overcome the transmission of multi-path interference and the elimination of intersymbol interference, the ground for high-speed video transmission channel. In this paper, OFDM technology, a more detailed analysis, and transmission characteristics of OFDM FFT algorithm based on the MATLAB software simulation Platform: |
Size: 71680 |
Author:罗萍 |
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Description: 经典书籍 剑桥大学大学出版社： 无线通信基础-Book Description:
The past decade has seen many advances in physical layer wireless communication theory and their implementation in wireless systems. This textbook takes a unified view of the fundamentals of wireless communication and explains the web of concepts underpinning these advances at a level accessible to an audience with a basic background in probability and digital communication. Topics covered include MIMO (multi-input, multi-output) communication, space-time coding, opportunistic communication, OFDM and CDMA. The concepts are illustrated using many examples from real wireless systems such as GSM, IS-95 (CDMA), IS-856 (1 x EV-DO), Flash OFDM and UWB (ultra-wideband). Particular emphasis is placed on the interplay between concepts and their implementation in real systems. An abundant supply of exercises and figures reinforce the material in the text. This book is intended for use on graduate courses in electrical and computer engineering and will also be of great interes Platform: |
Size: 4332544 |
Author:opaque |
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Description: 本程序可仿真IEEE802.16e LDPC编解码器，程序设计原理见本人如下专著。
[1] 肖扬著, Turbo与LDPC编解码及其应用,人民邮电出版社，2010.
[2] 肖扬著, MIMO多天线无线通信系统，人民邮电出版社，2009。
本程序只用于科研，不得用于其它场合。-The program can simulate LDPC codec with IEEE 802.16e LDPC of the size
2256*4512, and 1/2 code rate.
Copyright (C2010-2015) Yang XIAO, Beijing Jiaotong University, Nov.3, 2010, E-Mail: yxiao@bjtu.edu.cn.
Current Version Published: 2010-11-3
In my following books, I derived the algorithm of constructing the parity check matrices of IEEE 802.16e LDPC.
[1] Y. Xiao, Turbo and LDPC Codecs and their Applications, Press of Posts and Telecommunications, Beijing, 2010.
[2] Yang Xiao, MIMO Multiple Antenna Wireless Communication Systems, Press of Posts and Telecommunications, Beijing, 2009.
This program also provides the LDPC code with the size 4512*2256, and 1/2 code. Platform: |
Size: 72704 |
Author:肖扬 |
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Description: this document explain the orthogonal frequency division multiplixing for wireless communication is good document for the people who work with the method OFDM Platform: |
Size: 815104 |
Author:doctor |
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Description: 未来无线通信的主流技术之一，资料很详细很完整，值得学习-One of the mainstream technology for wireless communication, the information is very detailed very complete, it is worth learning Platform: |
Size: 14455808 |
Author:刘嘉宇 |
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Description: this book is very interesting for wireless communication systems designers by matlab. it is about MIMO_ OFDM wih matlab, codes and examples. Platform: |
Size: 5024768 |
Author:mezo |
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Description: 适用于无线通信入门之OFDM调制解调，包括高斯信道以及瑞利信道，ps瑞利信道结果有问题，若有大神帮忙指导感激不尽(OFDM modulation and demodulation, which is suitable for wireless communication, including Gauss channel and Rayleigh channel. PS Rayleigh channel has some problems. If there is great help, we can't thank you enough.) Platform: |
Size: 138240 |
Author:Bling00 |
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