Location:
Search - OFDM spectral
Search list
Description: 此程序是OFDM的循环谱计算，希望对大家有用，-this procedure is the cycle OFDM spectrum, we hope to useful,
Platform: |
Size: 1024 |
Author: panjianguo |
Hits:
Description: 谱估计中的ESPRIT算法仿真，对初学者了解ESPRIT算法有很大的帮助-Spectral estimation of the ESPRIT algorithm simulation, for beginners to understand ESPRIT algorithm has a great help
Platform: |
Size: 1024 |
Author: 李勇 |
Hits:
Description: 文章中分析了OFDM系统的频谱利用率，研究了OFDM系统中的信道判决反馈均衡问题-Article analyzes the spectral efficiency of OFDM systems to study the OFDM system channel decision feedback equalizer problem
Platform: |
Size: 248832 |
Author: 王云峰 |
Hits:
Description: ％ 仿真主要完成OFDM系统建模,实现OFDM系统传输流程,
％ 并对OFDM信号的时域波形及功率普密度进行分析.进行循环谱相关切片的分析。- Simulation of the main complete OFDM system modeling, the realization of OFDM transmission system process, of the OFDM signal in time domain waveforms and power density analysis of Pu. To carry out the cycle slice spectral correlation analysis.
Platform: |
Size: 10240 |
Author: fuhaitao |
Hits:
Description: 完整的ofdm程序，里面给出了功率谱密度的分析过程，比较精简实用-Ofdm complete procedure, which gives the power spectral density analysis of the process more streamlined and practical
Platform: |
Size: 1024 |
Author: ofdm |
Hits:
Description: BPSK循环谱matlab仿真程序，可用于OFDM系统干扰循环谱分析。-BPSK cycle simulation program matlab spectrum, OFDM systems can be used to interfere with the cycle spectral analysis.
Platform: |
Size: 1024 |
Author: 徐康 |
Hits:
Description: Abstract—In this paper we present an initial performance
evaluation of the 3GPP UTRA Long Term Evolution (UTRA
LTE) uplink with baseline settings. The performance results
are obtained from a detailed UTRA LTE uplink link level
simulator supporting OFDMA and SC-FDMA schemes. The basic
transmission scheme for uplink direction is based on singlecarrier
transmission in the form of DFT Spread OFDM with
an MMSE receiver. Two antenna configurations, SISO and 1x2
SIMO are considered in the analysis of spectral efficiency in
addition to Adaptive Modulation and Coding (AMC) and L1-
HARQ. For assessment purposes, the performance results of
SC-FDMA are compared with OFDMA. It is shown that 1x2
SIMO greatly increases the spectral efficiency of SC-FDMA
making it comparable to OFDMA, especially for high coding
rate. Furthermore, SC-FDMA has a flexibility to increase BLER
performance by exploiting frequency diversity.
Platform: |
Size: 160768 |
Author: ashokec |
Hits:
Description: ofdm频谱特性 包括升余弦窗后 和加CP后的三种频谱特性比较-ofdm spectrum features include raised cosine window of post-processing after the three kinds of spectral characteristics of CP compared
Platform: |
Size: 232448 |
Author: wuxi |
Hits:
Description: 正交频分复用的研究，可以有效提高上行链路的频谱利用率。-Orthogonal frequency division multiplexing studies can effectively improve the uplink spectral efficiency.
Platform: |
Size: 1024 |
Author: lidajun |
Hits:
Description: 本程序对OFDM这一调制方式的基本流程进行了仿真，通过高斯白噪声信道，接收信号解调，对比发送和接收信号波形，并画出功率谱密度图形-This program OFDM modulation scheme of this basic flow of the simulation carried out by white Gaussian noise channel, the received signal demodulation, compare sent and received signal waveforms and power spectral density plot graphics
Platform: |
Size: 1024 |
Author: mao |
Hits:
Description: N-continuous OFDM signals constructed by precoding the information symbol vector have superior spectral containment. This code shows the out-of-band spectrum comparison of the normal OFDM and the n-continuous OFDM.
Platform: |
Size: 13312 |
Author: Divya Goel |
Hits:
Description: 正交频分复用（OFDM）是一种特殊的多载波传输技术。它可以有效地对抗多径衰落，能够以很高的频谱利用率来实现高速数据传输。分析介绍了OFDM系统的基本原理及系统性能，以Matlab为开发平台，仿真了OFDM系统的误码率，仿真结果表明OFDM系统在较低信噪比下也具有较好的性能-Orthogonal Frequency-division Multiplexing（OFDM） is a special kind of multi-cartier transmission technology. It can effectively overcome multi-path fading and increase the spectral usage efficiency to implement high-speed data transmission. This paper analyzes the basic principle of OFDM system and system performance, and simulates the Bit Error Rate （BER） of OFDM system on the platform of Matlab. The simulation results show that the OFDM has a good performance.[
Platform: |
Size: 250880 |
Author: co |
Hits:
Description: Iterative receiver techniques, multiple-input – multiple-output (MIMO) processing, and
orthogonal frequency division multiplexing (OFDM) are amongst the key physical layer
technologies when aiming at higher spectral efficiency for a wireless communication system.
Special focus is put on iterative detection, decoding, and channel estimation for a MIMO-OFDM
system. After designing separately efficient algorithms for the detection, channel decoding, and
channel estimation, the objective is to optimize them to work together through optimizing the
activation schedules for soft-in soft-out (SfISfO) components.
Platform: |
Size: 3104768 |
Author: ashish |
Hits:
Description: uwb基础源码，包括uwb信号产生、各种调制方法、信号功率谱密度频谱特性、以及信道仿真等。-uwb basis of source, including uwb signal generator, various modulation methods, the signal power spectral density spectrum, and channel simulation.
Platform: |
Size: 37888 |
Author: 赵如意 |
Hits:
Description: Reaching Higher data rate and spectral efficiency are among the challenges expected for 4G wireless systems. Combining OFDM modulation and multiple-input multipleoutput (MIMO) help for that. In this paper, performances of a WiMAX MISO-OFDM based system are studied through
measurements done in a reverberation chamber. The used antennas’ specifications are given as well as the numerical blocks description. The results obtained are compared to a reference
case with single-input single-output (SISO) in order to evaluate the studied system’s real performances
Platform: |
Size: 466944 |
Author: satish |
Hits:
Description: 升余弦函数对OFDM信号功率谱密度的影响-Raised cosine function OFDM signal power spectral density
Platform: |
Size: 1699840 |
Author: rosecfr |
Hits:
Description: This M Code simulate the effects of clipping and filtering on PAPR reduction in OFDM-based wireless standard.Also the performance of BER versus SNR of original OFDM signals with PAPR reduction based on clipping and filtering schemes over AWGN channel is evaluated.
The simplest and most widely used technique of PAPR reduction is to basically clip the part of signals that are outside the allowed region.Clipping methode introduces both in band distortion and out of band radiation into OFDM signals which degrades the performance including the BER and spectral efficiency.Filtering can reduce out of band radiation after clipping although it can not reduce in-band radiation distortion.However, clipping may cause some peak regrowth so that the signal after clipping and filtering will exceed the clipping level at some point.To reduce peak regrowth a repeated filtering and clipping operation can be used to obtain a desirable PAPR at a cost of computational complexity increase.
-This M Code simulate the effects of clipping and filtering on PAPR PAPR reduction in OFDM-based wireless standard.Also the performance of BER versus SNR of original OFDM signals with PAPR reduction based on clipping and filtering schemes over AWGN channel is evaluated.
The simplest and most widely used technique of PAPR reduction is to basically clip the part of signals that are outside the allowed region.Clipping methode introduces both in band distortion and out of band radiation into OFDM signals which degrades the performance including the BER and spectral efficiency.Filtering can reduce out of band radiation after clipping although it can not reduce in-band radiation distortion.However, clipping may cause some peak regrowth so that the signal after clipping and filtering will exceed the clipping level at some point.To reduce peak regrowth a repeated filtering and clipping operation can be used to obtain a desirable PAPR at a cost of computational complexity increase.
Platform: |
Size: 11770880 |
Author: shahram |
Hits:
Description: OFDM Peak-to-Average Power Reduction Scheme
with Spectral Masking
Platform: |
Size: 106496 |
Author: katha |
Hits:
Description: Spectral Analysis of OFDM Signals and its Improvement by
Polynomial Cancellation Coding
Platform: |
Size: 229376 |
Author: katha |
Hits:
Description: Its a research paper from ieee In this letter, analytical expressions are derived for
the power spectral density (PSD) of orthogonal frequency division
multiplex (OFDM) signals employing a cyclic prefix (CP-OFDM)
or zero padding (ZP-OFDM) time guard interval. Under the relatively
weak assumptions that i) the data are independent and identically
distributed on all OFDM subcarriers and ii) the OFDM
pulse shape is sufficiently localized in time, simple closed-form PSD
expressions can be obtained. These expressions are then compared
to existing OFDM PSD expressions and validated by inspecting the
power spectra of some standardized OFDM signals.
Platform: |
Size: 267264 |
Author: payal |
Hits: