An EFOM for cross-layer optimization towards low-power and high-performance wireless networks
ABSTRACT This paper presents an Equivalent-Figure-of-Merit (EFOM) for designing and evaluating a wireless system towards low power and high performance. Relevant factors like delay, minimum latency, overhead length of a package, package length, data rate, bit-error-rate (BER), pre-receiving time of the receiver, average duty cycle and electronics performance factor are synthesized within a unique model. Comparing to other FOMs like energy per bit Ebit, this EFOM is able to rank the overall performance of a wireless network concerning the information not only power efficiency but also about communication quality (speed, BER, wake-up time, etc.), communication effectiveness and user's satisfaction. Applying this model to the system design, a 60 GHz self-demodulating receiver is designed and optimized, which obtains high-speed versatile performance in a low-traffic wireless network with better power efficiency comparing to other low-power wireless interface, e.g. Bluetooth and so on.
Full-textDOI: · Available from: D. Milosevic, Jan 15, 2014
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ABSTRACT: Recently, due to the popularity of smart devices, a need for various types of wireless communication has been tremendously increasing and several types of radio technologies for easy and quick communication with peripherals have appeared. In order for implementing a Personal Area Network (PAN), low power ZigBee and Bluetooth technologies have been generally used. On the other hand, Wi-Fi Local Area Network (LAN) technology has many advantages in implementing a PAN as it’s chipset is integrated and it’s transmission speed is relatively higher than the others. As the size of multimedia data like photos, videos, and music files has increased, more efficient communication environment for faster connection establishment and higher data transmission speed should be supported for end users accordingly. Because Bluetooth technology has intrincic limitations like transmission speed and coverage, new technologies are expected to provide longer transmission distances and higher transmission rates. Further, if the full functionality of Wi-Fi P2P standard would be implemented for today’s smart devices, it would be possible to provide various kinds of mobile innovative services that could maximize user experience. Transmission rate of Bluetooth technology in early stages was only up to 1Mbps. Although this speed is as fast as 6-fold compared to existing techniques, Bluetooth can hardly support a satisfied level of services to transfer large amounts of data such as high quality musics and videos. Therefore, Bluetooth has been used only for specific communication services with limitations. Transmission speed of Bluetooth, however, has been significantly improved as time goes. That is, Bluetooth 2.0 released in 2004 supports maximum speed of 3Mbps, and Bluetooth 3.0 released in 2 009 supports up to 24Mbps. Bluetooth 4.0 released in 2 010 has low energy mode while maintaing 24Mbps and also supports coin cell with low power consumptioin. Wi-Fi P2P is a direct communication technology between terminals without any intermediate devices such as routers and access point (AP). Wi-Fi module is basically mounted on most of smart devices. Therefore, once Wi-Fi P2P technology is adapted to mobile terminals or mobile devices such as TV, laptop, printer, and camera, all the communication services and multimedia contents can be simply provided for these devices by using the Wi-Fi P2P. In this study, we have proposed a cross-layer system design for optimizing smart devices’ communication property by utilizing the characteristics of high-speed data transmission rate of Wi-Fi P2P and low power consumption communication of Bluetooth. We have also verified that the proposed technique outperforms the existing Bluetooth and Wi-Fi P2P in the comparison of throughput as well as transmission delay through OPNET simulations, which leads to faster user connections and provides better quality of services to end users.Peer-to-Peer Networking and Applications 01/2014; DOI:10.1007/s12083-014-0276-0 · 0.46 Impact Factor
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ABSTRACT: The optimization of a wireless system towards low power performance is not straightforward, it is the combination and trade-offs among different communication layers. In the physical layer, the frequency and the data rate are the fundamental parameters for optimizing power consumption in the wireless communication system. The radio-triggered passive wireless sensor receiver is a solution to achieve a low power radio, enabling a longer lifetime. In this paper, the system level analysis of the radio-triggered passive wireless sensor receiver is provided, including the trade-off between frequency and data rate. On transistor level, the detailed power consumption models of the RF front-end are provided. Based on the analysis, a mm-Wave radio-triggered passive wireless sensor receiver is proposed.2013 IEEE 20th Symposium on Communications and Vehicular Technology in the Benelux (SCVT); 11/2013