Demirkol, Ilker
Ersoy, Cem
Onur, Ertan
For successful data delivery, the destination nodes should be listening to the medium to receive data when the sender node starts data communication. To achieve this synchronization, there are different rendezvous schemes, among which the most energy-efficient is utilizing wake-up receivers. Current hardware technologies of wake-up receivers enable us to evaluate them as a promising solution for wireless sensor networks. In this article the benefits achieved with wake-up receivers are investigated along with the challenges observed. In addition, an overview of state-of-the-art hardware and networking protocol proposals is presented. As wake-up receivers offer new opportunities, new potential application areas are also presented and discussed.


Cooperative Communications in Future Home Networks
Genc, Zulkuf; Rizvi, Umar H.; Onur, Ertan; Niemegeers, Ignas (Springer Science and Business Media LLC, 2010-05-01)
The basic idea behind cooperative communications is that mobile terminals collaborate to send data to each other. This effectively adds diversity in the system and improves the overall performance. In this paper, we investigate the potential gains of cooperative communication in future home networks. We derive analytical expressions for the error probability of binary phase shift keying (BPSK) signals over Nakagami-m fading channels in a multi relay communication network. Following to the analytical study, ...
Spectral Mask Compliance and Amplifier Nonlinearity in Single Carrier and OFDM Systems
Koken, Erman; Yılmaz, Ali Özgür (Springer Science and Business Media LLC, 2012-04-01)
In this paper we investige the comparative merits of two transmission techniques, OFDM and single carrier, with respect to spectral mask compliance when a nonlinear amplifier is utilized in transmission. Two different nonlinear power amplifier models are used for analyzing the behavior of the two techniques in terms of average transmitted power and distortion.
EACF: extensible access control framework for cloud environments
Mehak, Faria; Masood, Rahat; Shibli, Muhammad Awais; Elgedway, Islam (Springer Science and Business Media LLC, 2017-06-01)
The dynamic authorization and continuous monitoring of resource usage in cloud environments is a challenge. Moreover, the extant access control techniques are not well-suited for all types of the cloud-hosted applications predominantly for two reasons. Firstly, these techniques lack in providing features such as generality, extensibility, and flexibility. Secondly, they are static in nature, such that once the user is authorized, they do not evaluate the access request during and after the resource usage. E...
A Greedy Link Scheduler for Wireless Networks With Gaussian Multiple-Access and Broadcast Channels
Sridharan, Arun; Koksal, C. Emre; Uysal, Elif (Institute of Electrical and Electronics Engineers (IEEE), 2012-02-01)
Information-theoretic broadcast channels (BCs) and multiple-access channels (MACs) enable a single node to transmit data simultaneously to multiple nodes, and multiple nodes to transmit data simultaneously to a single node, respectively. In this paper, we address the problem of link scheduling in multihop wireless networks containing nodes with BC and MAC capabilities. We first propose an interference model that extends protocol interference models, originally designed for point-to-point channels, to includ...
Cooperative diversity in carrier frequency offset
Yılmaz, Ali Özgür (Institute of Electrical and Electronics Engineers (IEEE), 2007-04-01)
Cooperative diversity can enjoy the same benefits of MIMO systems when there is no possibility of carrying multiple antennas on a communication terminal. The main distinction between MIMO and cooperative diversity systems is the inherent asynchronism in the latter. We propose a model to study the effects of carrier frequency offset along with symbol asynchronism. Based on the proposed model, a Viterbi equalizer is utilized as a solution for demodulation. Through simulations, it is observed that such a solut...
Citation Formats
I. Demirkol, C. Ersoy, and E. Onur, “WAKE-UP RECEIVERS FOR WIRELESS SENSOR NETWORKS: BENEFITS AND CHALLENGES,” IEEE WIRELESS COMMUNICATIONS, pp. 88–96, 2009, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/38360.