scholarly journals Design and Performance Gain Evaluation of a Multi-Rank Codebook Utilizing Statistical Properties of the Spatial Channel Model

2016 ◽  
Vol 41 (7) ◽  
pp. 723-731
Author(s):  
Changhyeon Kim ◽  
Wonjin Sung
Keyword(s):  
Channel Model ◽  
Statistical Properties ◽  
Performance Gain ◽  
Spatial Channel Model ◽  
And Performance

scholarly journals Simulation and Analysis of Extended Spatial Channel Model in Vehicle-to-Vehicle Communication Environments

2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Xin Chen ◽  
Yaolin Zhu ◽  
Yong Fang
Keyword(s):  
Channel Model ◽  
Reference Model ◽  
Statistical Properties ◽  
Death Process ◽  
Closed Form Expression ◽  
Vehicle Communication ◽  
Vehicle To Vehicle ◽  
Communication Environments ◽  
Spatial Channel Model ◽  
V2v Communications

In this paper, an extension spatial channel model (SCM) for vehicle-to-vehicle (V2V) communications is proposed. To efficiently illustrate the real-world scenarios and reflect nonstationary properties of V2V channels, all effective scattering objects are subdivided into three categories of clusters according to the relative position of clusters. Besides, a birth-death process is introduced to model the appearance and disappearance of clusters on both the array and time axes. Their impacts on V2V channels are investigated via statistical properties including correlation functions. Additionally, a closed-form expression of channel impulse response (CIR) is derived from an extension SCM and cluster-based models. Furthermore, the spatial and frequency statistical properties of the reference model are thoroughly investigated. Finally, simulation results show that the proposed SCM V2V model is in close agreement with previously reported results, thereby validating the accuracy and effectiveness of the proposed model.

An Enhanced Two Stage MMSE Equalizer for Coded FBMC/OQAM Systems

2019 ◽  
Vol 10 (1) ◽  
pp. 69-82 ◽  
Author(s):  
Mohammad Rizk Assaf ◽  
Abdel-Nasser Assimi
Keyword(s):  
Error Propagation ◽  
Channel Model ◽  
Error Correcting Codes ◽  
Two Stage ◽  
Probability Of Error ◽  
Second Stage ◽  
Different Types ◽  
Mmse Equalizer ◽  
And Performance ◽  
Ici Cancellation

In this article, the authors investigate the enhanced two stage MMSE (TS-MMSE) equalizer in bit-interleaved coded FBMC/OQAM system which gives a tradeoff between complexity and performance, since error correcting codes limits error propagation, so this allows the equalizer to remove not only ICI but also ISI in the second stage. The proposed equalizer has shown less design complexity compared to the other MMSE equalizers. The obtained results show that the probability of error is improved where SNR gain reaches 2 dB measured at BER compared with ICI cancellation for different types of modulation schemes and ITU Vehicular B channel model. Some simulation results are provided to illustrate the effectiveness of the proposed equalizer.

A Geometric Polarization Rotation Model for the 3-D Spatial Channel Model

2012 ◽  
Vol 60 (12) ◽  
pp. 5966-5977 ◽  
Author(s):  
Stephan Jaeckel ◽  
Kai Borner ◽  
Lars Thiele ◽  
Volker Jungnickel
Keyword(s):  
Channel Model ◽  
Polarization Rotation ◽  
Spatial Channel Model ◽  
Rotation Model

scholarly journals Research on Spatial Channel Model for Vehicle-to-Vehicle Communication Channel in Roadside Scattering Environment

2017 ◽  
Vol 2017 ◽  
pp. 1-12 ◽  
Author(s):  
Xin Chen ◽  
Yong Fang ◽  
Weidong Xiang ◽  
Liang Zhou
Keyword(s):  
Communication Channel ◽  
Channel Model ◽  
Critical Distance ◽  
Traffic Density ◽  
Vehicle Speed ◽  
Angle Of Arrival ◽  
Vehicle To Vehicle ◽  
Proposed Model ◽  
Spatial Channel Model ◽  
The Impact

In this paper, an extension of spatial channel model (SCM) for vehicle-to-vehicle (V2V) communication channel in roadside scattering environment is investigated for the first time theoretically and by simulations. Subsequently, to efficiently describe the roadside scattering environment and reflect the nonstationary properties of V2V channels, the proposed SCM V2V model divides the scattering objects into three categories of clusters according to the location of effective scatterers by introducing critical distance. We derive general expressions for the most important statistical properties of V2V channels, such as channel impulse response, power spectral density, angular power density, autocorrelation function, and Doppler spread of the proposed model. The impact of vehicle speed, traffic density, and angle of departure, angle of arrival, and other statistical performances on the V2V channel model is thoroughly discussed. Numerical simulation results are presented to validate the accuracy and effectiveness of the proposed model.

scholarly journals A new look to 275 to 400 GHz band: Channel model and performance evaluation

2018 ◽  
Author(s):  
Evangelos N. Papasotiriou ◽  
Joonas Kokkoniemi ◽  
Alexandros-Apostolos A. Boulogeorgos ◽  
Janne Lehtomaki ◽  
Angeliki Alexiou ◽  
...  
Keyword(s):  
Performance Evaluation ◽  
Channel Model ◽  
And Performance ◽  
New Look
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