OFDMcode
所属分类：通讯编程
开发工具：matlab
文件大小：157KB
下载次数：62
上传日期：2009-03-05 20:16:59
上 传 者：
tianjing725
说明： 完整的OFDM链路程序并作了较为具体的解析从基本的bpsk,qpsk,qam到实际的ofdm系统，cdma链路，mac层仿真分析.
(Orthogonal frequency division multiplexing (OFDM) is becoming the chosen
modulation technique for wireless communications. OFDM can provide large data
rates with sufficient robustness to radio channel impairments. Many research centers
in the world have specialized teams working in the optimization of OFDM for
countless applications. Here, at the Georgia Institute of Technology, one of such
teams is in Dr. M. A. Ingram’s Smart Antenna Research Laboratory (SARL), a part
of the Georgia Center for Advanced Telecommunications Technology (GCATT).
The purpose of this report is to provide Matlab code to simulate the basic processing
involved in the generation and reception of an OFDM signal in a physical
channel and to provide a description of each of the steps involved. For this purpose,
we shall use, as an example, one of the proposed OFDM signals of the Digital
Video Broadcasting (DVB) standard for the European terrestrial digital television
(DTV) service.)
文件列表:
OFDMcode\zerohold.m (866, 1997-08-03)
OFDMcode\wrimage.m (1790, 1997-08-14)
OFDMcode\wread16.m (3357, 1997-06-06)
OFDMcode\wavwr.m (2665, 1997-06-06)
OFDMcode\Transmit.m (7217, 1997-08-12)
OFDMcode\subsamp.m (2029, 1997-10-01)
OFDMcode\stdmean.m (1302, 1997-10-01)
OFDMcode\settings.m (7188, 1998-12-04)
OFDMcode\receive.m (7113, 1997-10-18)
OFDMcode\rdimage.m (2624, 1997-08-14)
OFDMcode\rddatatx.m (2512, 1997-10-01)
OFDMcode\imagetx.m (4480, 1997-10-18)
OFDMcode\imagerx.m (7931, 1997-10-18)
OFDMcode\genrand.m (672, 1997-08-12)
OFDMcode\Fish3.bmp (76246, 1997-08-16)
OFDMcode\Fish2.bmp (17078, 1997-08-13)
OFDMcode\Fish.bmp (7478, 1997-08-03)
OFDMcode\findfrm.m (1832, 1997-10-01)
OFDMcode\Dc-x.jpg (6029, 1997-08-13)
OFDMcode\Craterla.jpg (19539, 1997-08-13)
OFDMcode\Corrs11.wav (47884, 1997-10-17)
OFDMcode\convbase.m (1756, 1997-10-18)
OFDMcode\chanwav.m (474, 1997-10-18)
OFDMcode\Channel.m (2489, 1997-06-17)
OFDMcode\calcerr.m (1242, 1997-06-18)
OFDMcode\bmpwrite.m (2405, 1997-07-30)
OFDMcode\bmpread.m (4353, 1997-07-30)
OFDMcode (0, 2009-03-02)
This simulation script set allows for an OFDM transmission to be
simulated. Imagetx.m generates the OFDM signal, saving it as a
windows WAV file. This allows the OFDM signal to be played out a sound
card and recorded back. Imagerx.m decodes the WAV to extract the
data.
settings.m contains all the common settings to specify all the
simulation parameters such as FFT size, number of carriers,
input data source file, input and output WAV files, etc.
See settings.m for more details.
Note: The both the receiver and transmitter must have a copy of the
input data file, as this is used for calculating the exact number
of data words in the transmission.
The scripts should work as extracted. Just run imagetx.m to generate the
OFDM signal. Then run imagerx.m to decode the signal. The initial settings
transmit a wave file 'Corrs.wav'. The decoded OFDM data ('Out.wav') can be
compared with the original data by listening to the two wave files.
Note: I have tried this script set in Matlab 5.1 and found that is does not
work correctly. If you have to get it working under matlab 5, send me an email
and I will fix up the errors.
Eric Lawrey October 1997.
eng-epl@jcu.edu.au
James Cook University
Electrical and Computer Engineering Department
Australia
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