[PDF] Top 20 Wideband Sensing for Cognitive Radio Systems in Heterogeneous Next Generation Networks

... Mobile Next Generation Network (MNGN) is characterized as heterogeneous network where varieties of access technologies are meant to ...be. Cognitive radio stands out as a candidate ... See full document

... communication systems. In recent times, Cognitive Radio (CR)has come out as one of the most competent candidates for enhancing the spectral exploitation ...Spectrum sensing is one of the most ... See full document

... in wideband spectrum from compressed measurements was proposed in ...the sensing task could be further enhanced based on geodesic distance, minimum eigenvalue and by conserving positive semi definite ...the ... See full document

... unused radio spectrum from primary licensed networks ...in cognitive radio has been encouraged by the measurements of the Federal Communications Commission (FCC), which have revealed that ... See full document

... Today‟s wireless networks are synchronized by a fixed spectrum allocation policy, i.e. the spectrum is synchronized by governmental agencies and is allocated to license holders or services on a long term basis for ... See full document

... The inefficient mistreatment of allotted spectrum to primary licensed users may be a quite common development, and CR technology has been thought-about as a key answer for that. It permits unauthorized or secondary users ... See full document

... proposed in the literature but more sophisticated approaches are needed to enhance sensing efficiency. This article proposes a two-stage local spectrum sensing approach. In the first stage, each CR performs ... See full document

... This mechanism identifies two kinds of untrusted secondary users which are called „Always Yes‟ users and „Always No‟ users. These untrusted secondary users can degrade detection performance greatly, especially when ... See full document

... (MPLS) networks as the primary vehicle for backhaul in 4G ...inter-cell Radio Resource Management (RRM) (b) radio admission control (c) scheduling via dynamic resource allocation (d) enforcement of ... See full document

... The coexistence lies in the ability of CRs to sense the frequency spectrum and avoid interference to PUs, which is addressed by the sensing techniques [6]. Self-coexistence, on the other hand, is the ability to ... See full document

... A cognitive radio (CR) system [1,2] improves the spec- trum utilization by allowing secondary users (SU) to access unused licensed ...more wideband access systems are designed, the underlying ... See full document

... Cognitive radio is the latest technique which can address the spectrum scarcity problem in many efficient ...communication systems around the world, there is a great demand for spectrum ... See full document

... the cognitive radio (CR) concept is a paradigm aiming at optimizing radio spectrum usage and spectrum efficiency ...communication systems performing spectrum sensing (SS) and operating in ... See full document

... in cognitive radio networks (CRNs) is evaluated and ...compared. Heterogeneous traffic is considered, and service differentiation between real-time and elastic (data) traffic is done in terms ... See full document

... localization systems, the BS would be capable of pre-estimating the mobile users’ propagation channel behavior for specific sections of their trip routes during their access ...10msec radio frame) which is ... See full document

... spectrum sensing can be classified into two categories: (1) Con- vex relaxing-based methods, such as basis pursuit (BP) [15,16] and Dantzig Selector [17]; (2) Greedy algorithm- based methods, such as matched ... See full document

... sensor networks consist of multimodal sensors [1, 2] such as radar, optical, infrared, and ...in heterogeneous sensor networks is a hot research topic in the field of image pro- cessing ... See full document

... The radio spectrum scarcity is becoming a serious pro- blem as the consumers’ increasing interest in wireless ...The cognitive radio (CR), which was first proposed by Mitola [1], is a promising ... See full document

... Although CR-WMNs have the potential to offer extended coverage, efficient spectrum resource utilisation, increased throughput, and improved network performance, CR-WMNs have to address the following challenges (Mitola, ... See full document

... a wideband common control channel to transmit the local sensing data is not ...local sensing data should be quantized before reporting to the fusion ...local sensing data with q quantization ... See full document