Performance improvement by transmit diversity technique for implant ultra‐wideband communication
| Autor: | Tomofumi Furukawa, Yuto Shimizu, Jianqing Wang, Daisuke Anzai |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Engineering
Orthogonal frequency-division multiplexing business.industry Ultra-wideband 020206 networking & telecommunications 02 engineering and technology Antenna diversity Frequency-division multiplexing Transmit diversity 020210 optoelectronics & photonics 0202 electrical engineering electronic engineering information engineering Electronic engineering Electrical and Electronic Engineering Antenna (radio) Performance improvement business Communication channel |
| Zdroj: | IET Microwaves, Antennas & Propagation. 10:1106-1112 |
| ISSN: | 1751-8733 |
| DOI: | 10.1049/iet-map.2015.0688 |
| Popis: | In implant body area networks (BANs), an ultra-wideband (UWB) technology is a promising candidate to accomuplish high data rate. However, due to its frequency, the UWB signals suffer from large attenuation in the implant communication link. This fact suggests the difficulty on achieving reliable communication. For achieving reliable communication, it is well known that a spatial diversity technique is efficient. In this study, the authors pay attention to the fact that it is possible to further miniaturise the UWB antenna due to its very high frequency. Then, the authors aim to develop a transmit polarisation diversity antenna for implant UWB communications, and apply the developed transmit diversity system to a UWB-impulse radio (UWB-IR) scheme and a multiband-orthogonal frequency division multiplexing (MB-OFDM) scheme, respectively. For evaluating the proposed system, the authors first analyse the propagation characteristics in the implant UWB channel, using the finite difference time domain numerical analysis technique. Then, the authors evaluate and discuss the communication performances of the both modulation schemes for the transmit polarisation diversity. As a result, at a communication distance of 7 cm, the throughputs have accomplished to 300 Mbps for the MB-OFDM scheme and 30 Mbps for UWB-IR scheme, respectively. |
| Databáze: | OpenAIRE |
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