Null subcarriers enable you to model guard bands and DC subcarrier locations for specific standards, such as the various 802.11 formats, LTE, WiMAX, or for custom allocations. You can allocate the location of nulls by assigning a vector of null subcarrier indices. ...
- 在Simulink库浏览器中，找到“连续”（Continuous）库。- 拖拽“多径信道模型”（Multipath Channel Mo...
The transmission model for MIMO is shown in figure 8. This shows 4 x 4 MIMO as an example. Figure 8. 4x4 MIMO system As shown, there are 16 different transmission paths, one from each transmit antenna to each receive antenna. Full MIMO requires two or more transmitters and two or ...
Null subcarriers enable you to model guard bands and DC subcarrier locations for specific standards, such as the various 802.11 formats, LTE, WiMAX, or for custom allocations. You can allocate the location of nulls by assigning a vector of null subcarrier indices. Similar to guard bands, guar...
目前常见的OFDM大多采取循环前缀(Cyclic Prefix,CP)OFDM方式。CP-OFDM技术具有解调上的便利,但是这种传输结构降低了数据传输效率,并且信道估计过程在数据块中插入了导频或训练序列、实时跟踪和估计信道,进一步降低了系统传输效率[5,6]。 本文提出一种新的OFDM模型,即基于伪噪声(Pseudo-noise)序列的OFDM模型,无需插入...
title(['Log-normal Path-loss Model, f_c=',num2str(fc/1e6),'MHz,' , '\sigma=', num2str(sigma), 'dB, n=2']) xlabel('Distance[m]'), ylabel('Path loss[dB]') 1.6是奥村模型,考虑了与区域相关的元素。 hata模型是奥村模型的拓展。
[2] MUNOZ M,RUBIO C G. A new model for service and application convergence in B3G./4G networks[J]. IEEE Trans on Wireless Communcations, 2004,3(10):6-12. [3] LI Xiao Dong, CIMINI L J. Effects of clipping and filtering on the performance of OFDM. IEEE Communication Letters, 1998,...
chEstOn =1;%Whether channel estimation is done or ideal channel model used maxNumErrs = 1e7;%Maximum number of errors found before simulation stops maxNumBits = 1e7;%Maximum number of bits processed before simulation stops visualsOn =1;%Whether to visualize channel response and constellations ...
% channel model, which can be replaced accordingly. load(‘RHH.mat’);%% SNR range Es_N0_dB = 0:2:20; % Es/N0 in dB Es_N0 = 10.^(Es_N0_dB./10); % linear Es/N0 N0 = 1./Es_N0; NoiseVar = N0./2;%% Testing data size ...
This paper introduces the basic principles of OFDM, and add the cyclic prefix in OFDM after anti-multipath interference mathematical derivation, OFDM system model is given on the basis of the system using MATLAB simulation. Finally, different channel, cyclic prefix, equalization effects on the system...