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ofdm_channel_estimation

于 2019-06-11 发布

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下载积分: 1 下载次数: 15

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代码说明：

说明： ofdm qpsk 添加循环前缀信道估计补偿与均衡信号星座图(OFDM QPSK add cyclic prefix channel estimation compensation and equalization signal constellation)

文件列表：

ofdm_channel_estimation, 0 , 2019-06-11
ofdm_channel_estimation\mfile, 0 , 2019-06-11
ofdm_channel_estimation\mfile\add_noise.m, 302 , 2004-12-07
ofdm_channel_estimation\mfile\cut_cp.m, 292 , 2004-12-06
ofdm_channel_estimation\mfile\de_map.m, 270 , 2004-12-06
ofdm_channel_estimation\mfile\de_qam16.m, 1142 , 2004-06-16
ofdm_channel_estimation\mfile\error_count.m, 271 , 2004-12-07
ofdm_channel_estimation\mfile\input_b.m, 369 , 2004-12-07
ofdm_channel_estimation\mfile\insert_cp.m, 388 , 2004-12-06
ofdm_channel_estimation\mfile\insert_pilot.m, 945 , 2004-12-07
ofdm_channel_estimation\mfile\lmmse_estimation.m, 953 , 2011-10-14
ofdm_channel_estimation\mfile\lr_lmmse_estimation.m, 1625 , 2011-10-14
ofdm_channel_estimation\mfile\ls_estimation.m, 553 , 2004-12-07
ofdm_channel_estimation\mfile\map_16qam.m, 380 , 2004-12-06
ofdm_channel_estimation\mfile\multipath_chann.m, 1886 , 2004-12-06
ofdm_channel_estimation\mfile\ofdm_system.m, 4990 , 2019-06-10
ofdm_channel_estimation\mfile\qam16.m, 526 , 2004-06-16
ofdm_channel_estimation\mfile\rayleighnew.m, 1758 , 2004-12-06
ofdm_channel_estimation\mfile\Rhh_test.m, 225 , 2004-12-07
ofdm_channel_estimation\mfile\selec_rayleigh_test.m, 1292 , 2004-12-09
ofdm_channel_estimation\mfile\SIR_n_fd.m, 446 , 2004-12-09

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一个完整的ofdm调制系统的仿真程序，包含PN码自动生成，串并转换等各功能模块和算法，重点针对不同信道条件对常用及各种信道盲均衡算法进行仿真分析比较，对不同原型滤波器算法进行研究分析，分析比较QAM系统，供博士毕业论文参考(Ofdm modulation of a complete system simulation program, including automatically generated PN code, and convert the string Other functional modules and algorithms, focusing on a different channel conditions and a variety of common blind channels are Balance simulation algorithm analysis and comparison of different research and analysis prototype filter algorithm, sub- Analysis of more QAM systems, Ph.D. thesis for reference)

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说明：设计一个巴特沃兹数字低通滤波器，其技术指标为：3dB带宽为0.2π，阻带截止频率为0.3π，通带纹波为1dB，阻带衰减大于30dB，采样间隔T=10ms。 1）采用冲激响应不变法； 2）采用双线性变换法设计； 3）采用FIR的窗函数（Hanning窗、Hamming窗或Blackman窗）设计。(A Butterworth digital low-pass filter is designed. Its technical specifications are: 3 dB bandwidth is 0.2 pi, stopband cut-off frequency is 0.3 pi, passband ripple is 1 dB, stopband attenuation is more than 30 dB, sampling interval T=10 Ms. 1) Impulse response invariance method is adopted. 2) Design by bilinear transformation method; 3) FIR window function (Hanning window, Hamming window or Blackman window) is used to design.)

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说明：信号处理、检测。CHAP全称是PPP（点对点协议）询问握手认证协议（Challenge Handshake Authentication Protocol）。(Noise, signal processing, detection, waveform. The full name of CHAP is PPP (Point-to-Point Protocol) Challenge Handshake Authentication Protocol.)

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In this paper, we present and analyze efficient frame synchronization and frequency offset compensation scheme with ternary sequences for an orthogonal frequency division multiplexing (OFDM) system in Rayleigh fading channels. Frame synchronization is an essential procedure for normal operation of the OFDM system because of sensitivity to synchronization errors. And when there are frequency offsets in OFDM frame, the loss of orthogonality occurs and the interference problem among several subcarriers is introduced. These fact leads to the requirement for joint implementation of the frame synchronization and frequency offset compensation.

2013-10-28 23:31:01下载

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Channel estimation for a MIMO-OFDM system for AWGN channel estimation technique Cyclic prefix length

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