2GHz MIMO Channel Model from Experimental Outdoor Data Analysis in UMTS
نویسندگان
چکیده
The key objective of this work was to obtain a MIMO model for a Line of Sight (LOS) channel component as well as the covariance matrix for a Non LOS deployment. A Maximum Likelihood Criteria is applied to obtain a LOS Spatial Signature Vector and a NLOS Covariance Matrix derived from channel measurements taken in the 2GHz UMTS spectrum for an urban deployment in Bristol (UK). Different user equipment deployments were considered to represent both LOS and NLOS, as well as static and dynamic (motion) situations. The parameters of interest were estimated from these data and the fitness model was satisfactorily evaluated in all cases. Further, the Kronecker product between transmitter and receiver matrices was evaluated in order to simplify the model, for both, LOS and NLOS cases, including polarization diversity cases..
منابع مشابه
Outdoor MIMO Measurements for UTRA Applications
MIMO techniques implemented through STBC, is a highly viable and attractive option for outdoor mobile networks. This paper presents a measurement campaign aimed at characterising the outdoor MIMO channels in the 2GHz UMTS band. Initial results comparing the channel properties and post-processing analysis for STBC schemes are also included.
متن کاملThe 17th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC’06) MIMO CHANNEL MEASUREMENTS AND ANALYSIS WITH PROTOTYPE USER DEVICES IN A 2GHz URBAN CELL
This paper describes an outdoor MIMO measurement campaign conducted in the 2GHz band employing a sounding bandwidth of 20MHz. The study aimed to compare the MIMO performance of two prototype devices with a reference dipole antenna module. The results obtained reveal a systematic blocking of one of the PDA antenna ports with the user’s thumb alongside a significant reduction in the available MIM...
متن کاملDouble-directional radio channel estimation at 2GHz for high speed vehicular mobiles - Experimental results
Results obtained from a high speed outdoor field trial in the 2GHz band are presented. The aim of this contribution is to characterize double directional radio propagation apt for MIMO (Multiple Input Multiple Output) systems in quite an unusual environment. From the Wideband measurements we estimate the delays, arrival and departure angles using two multiplexed antenna arrays, one circular and...
متن کاملPerformance Enhancement using MIMO techniques for UMTS FDD
In this paper Multiple Input Multiple Output (MIMO) techniques for Universal Mobile Telecommunication System (UMTS) analysis is presented. To simulate the radio channel the COST 259 directional channel model (DCM) is used for macro and microcell scenarios, as defined by the Third Generation Partnership Project (3GPP). Values of capacity and Bit Error Rate (BER) are obtained for different MIMO c...
متن کاملMultidimensional Rank Reduction Estimator for Parametric MIMO Channel Models
A novel algebraic method for the simultaneous estimation of MIMO channel parameters from channel sounder measurements is developed. We consider a parametric multipath propagation model with P discrete paths where each path is characterized by its complex path gain, its directions of arrival and departure, time delay, and Doppler shift. This problem is treated as a special case of the multidimen...
متن کامل