Media Access with Spatial Reuse for Cooperative Spectrum Sensing
نویسندگان
چکیده
منابع مشابه
Media Access with Spatial Reuse for Cooperative Spectrum Sensing
The increasing interest for wireless communication services and scarcity of radio spectrum resources have created the need for a more flexible and efficient usage of the radio frequency bands. Cognitive Radio (CR) emerges as an important trend for a solution to this problem. Spectrum sensing is a crucial function in a CR system. Cooperative spectrum sensing can overcome fading and shadowing eff...
متن کاملLearning Temporal-Spatial Spectrum Reuse
We formulate and study a multi-user multi-armed bandit (MAB) problem that exploits the temporal-spatial opportunistic spectrum access (OSA) of primary user (PU) channels so that secondary users (SUs) who do not interfere with each other can make use of the same PU channel. We first propose a centralized channel allocation policy that has logarithmic regret, but requires a central processor to s...
متن کاملCooperative Spectrum Sensing with Partial CSI
Spectrum sensing is mandatory in Cognitive Radio systems, and is used in order to identify spectrum opportunities, and to guarantee that it does not cause unacceptable interference to the license owner. Since a single sensor may be in fading or shadowing, cooperative sensing among multiple sensors which experience uncorrelated fading is required to guarantee reliable sensing performance. In thi...
متن کاملCooperative Sequential Spectrum Sensing Algorithms for OFDM
This paper considers the problem of spectrum sensing in cognitive radio networks when the primary user employs Orthogonal Frequency Division Multiplexing (OFDM). We develop cooperative sequential detection algorithms based on energy detectors and the autocorrelation property of cyclic prefix (CP) used in OFDM systems and compare their performances. We show that sequential detection provides muc...
متن کاملA Spatial and Temporal Spectrum Sensing System for Interference Avoidance in Dynamic Spectrum Access
This paper describes a smart radio network that can facilitate communication of radios operating under congested conditions in the 2.4 GHz unlicensed band. The network detects legacy systems spectrally, temporally, and spatially, and implements a novel avoidance technique to reduce or remove interference with the legacy systems. The system was designed by a team of students from Carnegie Mellon...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Wireless Sensor Network
سال: 2017
ISSN: 1945-3078,1945-3086
DOI: 10.4236/wsn.2017.97012