Energy-Based Cooperative Spectrum Sensing of SC-FDMA Systems
نویسندگان
چکیده
منابع مشابه
Energy-Based Cooperative Spectrum Sensing of SC-FDMA Systems
In this paper, we propose a frequency-hopping M -ary frequency-shift keying spectrum sensing network (FH/MFSK SSN) for identifying the on/off states of the users supported by a singlecarrier frequency-division multiple assess (SC-FDMA) primary radio (PR) system. Specifically, the spectrums of an uplink interleaved frequency-division multiple access (IFDMA) PR system are monitored by a number of...
متن کاملDirect/Cooperative AF Relay Switching Using Spectrum Division/Adaptive Subcarrier Allocation For SC-FDMA Uplink
Abstract— In this paper, we propose a direct/cooperative amplify-and-forward relay (D/AR) switching using a spectrum division/adaptive subcarrier allocation (SDASA) for increasing the uplink capacity of single carrier-frequency division multiple access (SC-FDMA). In the D/AR switching, switching between direct communication and cooperative AF relay is done so that the channel capacity is maximi...
متن کاملSpectrum Sensing of MIMO SC-FDMA Signals in Cognitive Radio Networks: UMP-Invariant Test
Key role in cognitive radio (CR) process play the spectrum sensing techniques which are employed by the unlicensed secondary users in order to detect the spectrum holes. It is, therefore, very important to do this with an optimal method. This inspire us to consider a Uniformly Most Powerful Invariant (UMPI) test as an optimum invariant test for the spectrum sensing problem. To this end, we deve...
متن کاملEnergy efficient QoS constrained scheduler for SC-FDMA uplink
In this paper we propose a framework for an energy efficient scheduler for multiuser SCFDMAwith queue state information (QSI) and quality of service (QoS) constraints. Resource allocation is formulated as a two-stage problemwhere resources are allocated in both time and frequency. The scheduling policy is obtained in two stages for the intraand inter-user allocations respectively. A near optima...
متن کاملCooperative Wideband Spectrum Sensing Based on Sub-Nyquist Cooperative Narrowband Spectrum Sensing in Cognitive Radio Devices
Abstract— This article proposes a new cooperative wideband spectrum-sensing algorithm based on cooperative sub-Nyquist narrow band spectrum sensing in cognitive radio devices (CRD). Within this scenario, to guarantee optimal detection, the spectrum-sensing function must work with a great amount of samples of the signal obtained at rates equal or higher than the Nyquist rate, which generates hig...
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: EAI Endorsed Transactions on Cognitive Communications
سال: 2014
ISSN: 2313-4534
DOI: 10.4108/cogcom.1.1.e2