Power Control for Cognitive Radio Ad Hoc Networks

Qian, Lijun; Li, Xiangfang; Attia, John Okyere; Gajić, Zoran

doi:10.1109/lanman.2007.4295967

Cited by 80 publications

(39 citation statements)

References 9 publications

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“…The proposed ANCPC scheme with TPC is compared with the typical underlay primary power measurement based TPC algorithm [7] with the parameters in Table 2. Fig.…”

Section: Simulation Resultsmentioning

confidence: 99%

“…In most of transmission power control (TPC) schemes such as [6] and [7], ranging estimation primarily depends on explicit propagation primary power level measurement to determine the appropriate TPC related interference distance. Table 1 gives the definition of parameters that are used for the localization calculations.…”

Section: B Problem Formulationmentioning

confidence: 99%

“…In [6], secondary system takes advantage of the alarm threshold, if the power level from the incumbent signal is lower than the threshold, the current channel can be utilized for the underlay mode. In [7], similar power control mechanism is exploited to satisfy both ends, where CR user first senses the power level of primary user (PU) and then controls its transmission power within the reasonable range to avoid interfering with the corresponding PU.…”

Section: Introductionmentioning

confidence: 99%

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ANCPC: Adaptive Neighbor Coordinated Interference Avoidance Power Control for Cognitive Radio Ad Hoc Networks

Hao

Yoo

2010

2010 7th IEEE Consumer Communications and Networking Conference

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Recently, the cognitive radio network with the underlay transmission mode which can enhance the spectrum reutilization is gathering more and more attentions. With the development of research on cognitive radio (CR) underlay mode, transmission power control -the determination of the interference range of the CR communication pair is becoming an essential research issue. In this paper, we propose an adaptive neighbor coordinated interference avoidance power control scheme with collision free reporting protocol which can reduce the T non-determinacyT of the interference estimation in cognitive radio ad hoc networks. It provides the detection and protection for incumbent systems around the CR communication pair. Simulation results show that the proposed power control scheme can greatly reduce interference to the neighbor incumbent devices. A higher number of neighbor nodes leads to better protection of incumbent devices.

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“…The proposed ANCPC scheme with TPC is compared with the typical underlay primary power measurement based TPC algorithm [7] with the parameters in Table 2. Fig.…”

Section: Simulation Resultsmentioning

confidence: 99%

Section: B Problem Formulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

ANCPC: Adaptive Neighbor Coordinated Interference Avoidance Power Control for Cognitive Radio Ad Hoc Networks

Hao

Yoo

2010

2010 7th IEEE Consumer Communications and Networking Conference

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“…In order to achieve an efficient power control, a lot of methods/algorithms were suggested, involving different disciplines, like polynomial time algorithms [26], game theory (cooperative or non-cooperative games [27]), water filling scheme (for OFDM systems, "the sub-carriers are allocated to the users with the best channel quality initially and then adjusted to improve the system performance") [28], fuzzy logic for power allocation control [29], a joint power control and admission control schemes [30] etc. The adaptive power control domain is a very approached field, and offers a lot of research opportunities.…”

Section: Monitoring and Adaptation In Wisdom: Cr Solutionsmentioning

confidence: 99%

5G Based on Cognitive Radio

Badoi

Prasad

Croitoru

et al. 2010

Wireless Pers Commun

105

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Both the cognitive radio (CR) and the fifth generation of cellular wireless standards (5G) are considered to be the future technologies: on one hand, CR offers the possibility to significantly increase the spectrum efficiency, by smart secondary users (CR users) using the free licensed users spectrum holes; on the other hand, the 5G implies the whole wireless world interconnection (WISDOM-Wireless Innovative System for Dynamic Operating Megacommunications concept), together with very high data rates Quality of Service (QoS) service applications. In this paper, they are combined together into a "CR based 5G". With this aim, two novel ideas are advanced: the 5G terminal is a CR terminal and the CR technology is chosen for WISDOM concept. Thus, the 5G takes CR flexibility and adaptability and makes the first step through a commercial and tangible form.

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“…In [8] the authors studied in tiered networks have definitely assumed that an operator planned underlay of a macrocell with single/multiple microcells. The investigation in CR (cognitive radio) with the schemes of sensing-throughput tradeoff for computing optimal sensing time by CR users and limit transmit power of CR users are presented in [9] and [10,11], respectively. The analysis of channel capacities in an ad hoc network with spatial diversity is illustrated in [12].…”

Section: Introductionmentioning

confidence: 99%

On Two-Tier Femtocell over Fading Environments

Chen¹,

Chuang²,

Chiu³

et al. 2011

ENG

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In this paper the system performance of an MC-CDMA (multi-carrier coded-division multiple-access) system operating over single-cell with two-tier femtocell environment is analyzed. Consider two-tier scenario is deployed with a macrocell site in which is being surrounded several femtocells, which are designed to serve a group of subscribers locate in a small coverage area such as small office, home office or a house. The coverage area is typically up to 100 meters in radius. Mostly, the femtocell is applied to serve indoor subscribers, thus, the Rayleigh fading is adopted to characterize the propagation channel. The technique of TH-MC-CDMA (time-hopped multi-carrier coded-division multiple-access) technique is supposed to transmit each symbol alternatively with fair time (slotting)/frequency (coding) for each user in the hotspots (the area around 0 th femtocell). The intensity of signals estimated at a mobile unit located in the second tie, i.e., the femtocell coverage area, is an important issue. The contribution of the paper is mainly to evaluate the system performance with both the BER (bit error rate) and OP (outage probability) according to the most important parameters, for example, the activating user number, the hopping number provided by TH-MC-CDMA system and the subcarrier number. Furthermore, the discussion of interference avoidance is also discussed with non-analytically.

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Power Control for Cognitive Radio Ad Hoc Networks

Cited by 80 publications

References 9 publications

ANCPC: Adaptive Neighbor Coordinated Interference Avoidance Power Control for Cognitive Radio Ad Hoc Networks

ANCPC: Adaptive Neighbor Coordinated Interference Avoidance Power Control for Cognitive Radio Ad Hoc Networks

5G Based on Cognitive Radio

On Two-Tier Femtocell over Fading Environments

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