四、PAPR减小技术——以DFT-s-OFDM为例 在《MIMO-OFDM无线通信技术及MATLAB实现》第7章PAPR减小技术,介绍了以下几种:限幅技术、编码技术、加扰技术、自适应预失真技术和DFT扩频技术。 本文将集中在DFT扩频技术上,这是为什么呢?这里结合5G NR协议来说。 以下内容来自王映民、孙韶辉的《5G移动通信系统设计与标准详解》...
For 20-Gbaud 16QAM-OFDM signal, with the aid of nonlinear equalization (NLE) algorithm, we respectively provide 6.2-dB and 5.2-dB receiver sensitivity improvement under the hard-decision forward-error-correction (HD-FEC) threshold of 3.8脳10 3 for the back-to-back (BTB) case and after ...
【8] Scharf L L.Statistical Signal Processing :Detection,Estimat ion,an d Time Series Analysis[M].【S.1.]:Addison—Wesley, 199 1. [9] E dfo rs O,Sandell M .OFDM Channel Estimation by Singular Value Decomposition[C]//Proc.of the 46th IEEE Vehicular Technology ...
(Signal Analyzer)骨子里都是量测时域(Time Domain),其实现实的讯号都是所谓的时域讯号,只是高频讯号很难直接量测,所以才会用接收机先降频后在处理,但现在高阶的示波器(Oscilloscope)的取样率(Sampling Rate)与频宽都相当高,已经有高达100G/s的机器出现,直接进行时域量测后进行傅立叶变换(Fourier Transform) 不就...
et al. An Improved DFT-Based Channel Estimation Algorithm for OFDM System in Non-sample-Spaced Multipath Channels. Circuits Syst Signal Process 33, 1277–1288 (2014). https://doi.org/10.1007/s00034-013-9678-0 Download citation Received21 March 2013 Revised12 September 2013 Published11 October ...
are presented and discussed in detail. Besides, the discrete Fourier transform (DFT) precoding technique is also applied to reduce the peak-to-average power ratio (PAPR) of the baseband GB-OFDM signal as well as improve bit error rate (BER) performance. By using the DFT precoding technique,...
th OFDM symbol, the th subcarrier of the received signal is denoted as (1) where are the pilot subcarriers, for simplicity, it is assumed that , represents the channel frequency response on the th subcarrier. is the AWGN with zero mean and variance of ...
Mansour, Nagham Abd AlazeezKadhim, Abdulkareem AMANSOUR N A AꎬKADHIM A A.Improved DFT~based channel estimation techniques for OFDM signal [ J] . In~ ternational journal of engineering researchꎬ2016ꎬ5(12) : 922~926.
applying a DFT-spread-OFDM-type scheme to the block of K samples A = (A0;...; AK1), and obtaining an output signal representing a symbol comprising N complex samples Sn in the radio signal, with n = 0 to N-1; determining, in the output signal, a first position T1 and a second...
The terminal is adapted for transmitting reference signaling having a comb structure for transmission based on either the first FDMA technology or the second FDMA technology. The disclosure also pertains to related devices and methods.ROBERT BALDEMAIRERIK DAHLMANLARS LINDBOMSTEFAN PARKVALL...