Design and Implement of a Channel Model Based on TD-LTE

2014 ◽  
Vol 513-517 ◽  
pp. 2530-2533
Author(s):  
Hua Hua Wang ◽  
Ming Li ◽  
Lei Cheng Chen
Keyword(s):  
Relative Error ◽  
Doppler Effect ◽  
Fading Channel ◽  
Channel Model ◽  
Model Combining ◽  
Baseband Signal ◽  
Comparison And Analysis ◽  
Wireless Fading Channel ◽  
Set Up ◽  
Channel Simulator

This paper studies the characters of wireless fading channel based on TD-LTE, and it is critical of multipath effect and Doppler effect. So there design a math channel model combining these factors. And then set up link in Matlab to analyse the model. Through simulating we can optimize the model. After that it is implemented by FPGA of final determined math channel model. Using TD-LTE baseband signal as driven signal, this model is simulated and implemented in ModelSim platform. Through comparison and analysis the error between the channel impulse of the model and the result of Matlab link, we can obtain that the relative error is very little. So it can confirm reliability of this channel simulator.

A New Simple Channel Simulator Based on FPGA

2014 ◽  
Vol 926-930 ◽  
pp. 2329-2332
Author(s):  
Liu Yu ◽  
Lei Cheng Chen ◽  
Ming Li ◽  
Peng Rui Wang
Keyword(s):  
Mathematical Model ◽  
Channel Model ◽  
Channel Modeling ◽  
Complex Theory ◽  
Design Cycle ◽  
Long Time ◽  
Comparison And Analysis ◽  
The Mathematical Model ◽  
Channel Simulator

Through detailed research on the channel modeling, this paper proposes a new simple channel model to solve the difficult of the complex theory and long time design cycle modeling such as SCM, SCME and the WINNERII models. This paper has constructed the mathematical model, and then simulated and analyzed it based on the Matlab, and finally realized the channel simulator based on FPGA. After that, through the comparison and analysis, we can guarantee the practicability and reliability of this simulator.

scholarly journals Improvement of Fading Channel Modeling Performance for Wireless Channel

2018 ◽  
Vol 8 (3) ◽  
pp. 1451
Author(s):  
Inaam Abbas Heider
Keyword(s):  
Fading Channels ◽  
Fading Channel ◽  
Communication Channel ◽  
Channel Model ◽  
Signal To Noise Ratio ◽  
Channel Modeling ◽  
Wireless Channel ◽  
Rayleigh Channels ◽  
Geographical Position ◽  
Wireless Fading Channel

Fading channel modeling is generally defined as the variation of the attenuation of a signal with various variables. Time, geographical position, and radio frequency which is included. Fading is often modeled as a random process. Thus, a fading channel is a communication channel that experiences fading. In this paper, the proposed system presents a new design and simulate a wireless channel using Rayleigh channels. Rayleigh channels using two approaches (flat and frequency-selective fading channels) in order to calculate some path space loss efforts and analysis the performance of different wireless fading channel modeling. The results show that the bite error rate (BER) performance is dramatically improved in the value of signal to noise ratio (SNR) is equal to 45dB. Finally, the experimental results show that the proposed method enhances the performance of fading channel modeling by reducing the error of BER when the SNR is reduced also. Moreover, the more accurate model is Rayleigh model which can be considered for developing fading channel model.

scholarly journals 3GPP Channel Model Emulation with Analysis of MIMO-LTE Performances in Reverberation Chamber

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Nabil Arsalane ◽  
Moctar Mouhamadou ◽  
Cyril Decroze ◽  
David Carsenat ◽  
Miguel Angel Garcia-Fernandez ◽  
...  
Keyword(s):  
Channel Model ◽  
Reference Case ◽  
Reverberation Chamber ◽  
Single Input Single Output ◽  
Single Output ◽  
Received Power ◽  
Communication Devices ◽  
Set Up ◽  
Multiple Clusters ◽  
Active Link

Emulation methodology of multiple clusters channels for evaluating wireless communication devices over-the-air (OTA) performance is investigated. This methodology has been used along with the implementation of the SIMO LTE standard. It consists of evaluating effective diversity gain (EDG) level of SIMO LTE-OFDM system for different channel models according to the received power by establishing an active link between the transmitter and the receiver. The measurement process is set up in a Reverberation Chamber (RC). The obtained results are compared to the reference case of single input-single output (SISO) in order to evaluate the real improvement attained by the implemented system.

On Capacity of 60GHz TH-PPM Systems in Frequency Selective Fading Channels

2012 ◽  
Vol 433-440 ◽  
pp. 5506-5511 ◽  
Author(s):  
Na Li ◽  
Hao Zhang ◽  
Jing Jing Wang ◽  
T. Aaron Gulliver
Keyword(s):  
Fading Channels ◽  
Fading Channel ◽  
Channel Model ◽  
Selective Fading ◽  
Pulse Modulation ◽  
Frequency Selective Fading ◽  
Single User ◽  
Frequency Selective ◽  
Performance Results ◽  
Channel Properties

Two pulse waveforms are designed and analyzed for 60GHz pulse modulation systems. An indoor frequency selective fading channel model is introduced for single user 60GHz TH-PPM systems. The capacity with this channel model of a 60GHz TH-PPM system based on the designed pulses is derived. Performance results are presented to illustrate the effects of the pulse waveforms and channel properties on the channel capacity.

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