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
標簽： communication computers software wireless
上傳時間： 2014-05-29
上傳用戶：wangdean1101
我剛完成的基于Quartus two 開發環境全部用Verilog硬件描述語言編譯無誤的MSK調制解調器
上傳時間： 2016-04-14
上傳用戶：CHINA526
This belongs to the correspondence principle topic, the topic is under two kind of channels the 2psk system analysis
標簽： the topic correspondence principle
上傳時間： 2013-12-19
上傳用戶：edisonfather
This two-Category Classifier Using Discriminant Functions to separeate two classes. The Classifier is designed on classes which has two feature vectors and other case it has one feature vector.
標簽： Classifier Discriminant two-Category Functions
上傳時間： 2016-04-23
上傳用戶：2525775
Video for linux head two 的視頻采集示例，是V4L的升級版，在Linux下編譯即可，是Linux下圖像采集編程的API
上傳時間： 2013-12-22
上傳用戶：zsjinju
This file set two employees information and print them out and tell today is whose borthday.
標簽： information employees and borthday
上傳時間： 2016-05-06
上傳用戶：yoleeson
1,Check data in two files and report the error 2,Calculate the pay and report.
上傳時間： 2016-05-06
上傳用戶：wanghui2438
Thinking in c++ vol one and vol two 相當不錯的兩本書，一本是基礎是一本進階，附帶源碼
上傳時間： 2016-05-07
上傳用戶：dapangxie
There are two files in the zip folder. bpsk_spread.m and jakesmodel.m Steps for simulation: 1] Run jakesmodel.m first 2] Then run bpsk_spread.m . 3] Note that during the first run bpsk_spread.m has no rayleigh fading.This is because the corresponding code has been commented 4] The resulting performance is stored in BER_awgn. 5] Now uncomment the Rayleigh Fading code in bpsk_spread.m file. 6] Same time comment BER_awgn (line 112) and uncomment BER_ray variable. 7] Run the simulation. To compare the perfromances of the receiver using DSSS plot the BER_awgn and BER_ray
標簽： bpsk_spread jakesmodel simulation folder
上傳時間： 2016-05-19
上傳用戶：ynsnjs
快速傅里葉變換（FFT）算法。FFT - Fast Fourier transform. The length of X must be a power of two, for a fast radix-2 fast-Fourier transform algorithm is used
標簽： FFT transform Fourier length
上傳時間： 2013-12-19
上傳用戶：sy_jiadeyi
