Experimental evaluation of MIMO capacity for ultrawideband body-centric wireless propagation channels

Qaraqe, M., Abbasi, Q. H. , Alomainy, A. and Serpedin, E. (2014) Experimental evaluation of MIMO capacity for ultrawideband body-centric wireless propagation channels. IEEE Antennas and Wireless Propagation Letters, 13, pp. 495-498. (doi: 10.1109/LAWP.2014.2309982)

Abstract

In this letter, the capacity of ultrawideband (UWB) multiple-input-multiple-output (MIMO) on-body channels is evaluated. Three on-body channels are investigated-namely, Chest-Waist, Wrist-Waist, and Ankle-Waist channels. The data transmission capacities of each channel are evaluated and presented using the two power allocations schemes - namely, equal power allocation and the waterfilling power allocation. Statistical analysis is performed on the MIMO channel data, and the Rician K-factors of the channels are analyzed. It is found that the waterfilling scheme outperforms the equal power scheme in terms of capacity for all three on-body channels, with an average improvement of 1.2 b/s/Hz for signal-to-noise ratio (SNR) less than 12 dB (percentage improvement of 187% at 0 dB and 100% at 8 dB). However, the performances of the two schemes become comparable as the SNR increases with less than 0.28 b/s/Hz difference (percentage improvement of 3.6%) at an SNR level of 20 dB.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Abbasi, Professor Qammer
• Authors: Qaraqe, M., Abbasi, Q. H., Alomainy, A., and Serpedin, E.
• College/School: College of Science and Engineering > School of Engineering
• Journal Name: IEEE Antennas and Wireless Propagation Letters
• Publisher: IEEE
• ISSN: 1536-1225
• ISSN (Online): 1548-5757