TY - JOUR
T1 - Polarimetric Wireless Indoor Channel Modelling Based on Propagation Graph
AU - Adeogun, Ramoni
AU - Pedersen, Troels
AU - Gustafson, Carl
AU - Tufvesson, Fredrik
PY - 2019/10
Y1 - 2019/10
N2 - This paper generalizes a propagation graph model to polarized indoor wireless channels. In the original contribution, the channel is modelled as a propagation graph in which vertices represent transmitters, receivers and scatterers while edges represents the propagation conditions between vertices. Each edge is characterized by an edge transfer function accounting for the attenuation, delay spread and phase shift on the edge. In this contribution, we extend this modelling formalism to polarized channels by incorporating depolarization effects into the edge transfer functions and hence, the channel transfer matrix. We derive closed form expressions for the polarimetric power delay spectrum and cross-polarization ratio of the indoor channel. The expressions are derived considering average signal propagation in a graph and relate these statistics to model parameters, thereby providing a useful approach to investigate the averaged effect of these parameters on the channel statistics. Furthermore, we present a procedure for calibrating the model based on method of moments. Simulations were performed to validate the proposed model and the derived approximate expressions using both synthetic data and channel measurements at 15GHz and 60 GHz . We observed very good agreement between the model, approximate expressions and measured channel.
AB - This paper generalizes a propagation graph model to polarized indoor wireless channels. In the original contribution, the channel is modelled as a propagation graph in which vertices represent transmitters, receivers and scatterers while edges represents the propagation conditions between vertices. Each edge is characterized by an edge transfer function accounting for the attenuation, delay spread and phase shift on the edge. In this contribution, we extend this modelling formalism to polarized channels by incorporating depolarization effects into the edge transfer functions and hence, the channel transfer matrix. We derive closed form expressions for the polarimetric power delay spectrum and cross-polarization ratio of the indoor channel. The expressions are derived considering average signal propagation in a graph and relate these statistics to model parameters, thereby providing a useful approach to investigate the averaged effect of these parameters on the channel statistics. Furthermore, we present a procedure for calibrating the model based on method of moments. Simulations were performed to validate the proposed model and the derived approximate expressions using both synthetic data and channel measurements at 15GHz and 60 GHz . We observed very good agreement between the model, approximate expressions and measured channel.
KW - Directed graph
KW - dual polarized system
KW - measurements
KW - millimeter wave
KW - multi-in multi-out (MIMO) system
KW - polarization
KW - propagation graph
KW - stochastic channel model
UR - http://www.scopus.com/inward/record.url?scp=85073603950&partnerID=8YFLogxK
U2 - 10.1109/TAP.2019.2925128
DO - 10.1109/TAP.2019.2925128
M3 - Journal article
AN - SCOPUS:85073603950
SN - 0018-926X
VL - 67
SP - 6585
EP - 6595
JO - I E E E Transactions on Antennas and Propagation
JF - I E E E Transactions on Antennas and Propagation
IS - 10
M1 - 8753690
ER -