Wideband Characterization of Backscatter Channels: Derivations and Theoretical Background

被引:21
作者
Arnitz, Daniel [1 ]
Muehlmann, Ulrich [2 ]
Witrisal, Klaus [1 ]
机构
[1] Graz Univ Technol, Signal Proc & Speech Commun Lab, A-8010 Graz, Austria
[2] NXP Semicond, A-8101 Gratkorn, Austria
关键词
Average excess delay; backscatter channels; K-factor; multipath channels; parameter approximation; RMS delay spread; wideband parameters; STATISTICAL-MODEL; INDOOR CHANNEL; RADIO CHANNELS; DELAY;
D O I
10.1109/TAP.2011.2167923
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
The wireless channel of backscatter radio systems is a two-way pinhole channel, created by the concatenation of two standard wireless channels. We present a method to calculate wideband channel parameters of backscatter channels based on the parameters of the constituent one-way channels. The focus is on characteristics that are vital for narrowband and wideband ranging, such as the K-factor w.r.t. the direct (line-of-sight) path and the RMS delay spread. The presented analyses include uncorrelated as well as correlated channel pairs and are thus valid for bistatic and monostatic antenna setups. We also show that the uncorrelated scattering (US) assumption holds for the backscatter channel provided that the constituent channels are US.
引用
收藏
页码:257 / 266
页数:10
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