Transmission Power and Capacity of Secondary Users in a Dynamic Spectrum Access Network

Li, Xiaohua; Hwu, Juite; Ng, Fan

doi:10.1109/milcom.2007.4454931

Cited by 6 publications

(5 citation statements)

References 6 publications

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“…While investigating the transmission power of a single secondary transmitter in [8], we have conducted some simple extensions into multiple secondary transmitters case. When there are multiple secondary transmitters, the optimal transmission power of each secondary transmitter becomes more difficult to derive, and the results depend highly on the optimization objectives.…”

Section: Sum Transmission Power Of Multiple Secondary Transmittersmentioning

confidence: 99%

“…In [8], we simplified the problem by considering the completely uncooperative secondary transmitters, each of which acts independently without any knowledge of the others. In this case, a reasonable and practical way is to set the objective for each of the L secondary transmitters to contribute to 1/L of the total allowable interference to the primary users.…”

Section: Sum Transmission Power Of Multiple Secondary Transmittersmentioning

confidence: 99%

“…From the analysis in [8], we have seen that for majority of cases, especially when the distance between the primary and secondary transmitters are large, the primary receivers on the circle of radius x usually have the smallest SINR. An intuitive explanation is that they are the primary receivers that are farthest away from T0.…”

Section: Sum Transmission Power Of Multiple Secondary Transmittersmentioning

confidence: 99%

“…With a different approach, we have derived various expressions for a single secondary user's transmission power or transmission capacity considering randomly distributed primary receivers [8]. In this paper, we analyze the overall secondary transmission power for multiple secondary transmitters, under the assumption that all the primary receivers and the secondary transmitters are randomly distributed.…”

Section: Introductionmentioning

confidence: 99%

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Sum transmission power of multiple cooperative secondary transmitters in dynamic spectrum access networks

Hwu

Chen

2008

2008 42nd Annual Conference on Information Sciences and Systems

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Cognitive radio is a desirable technique for secondary users to utilize the spectrum gray space. In order to avoid intolerable interference to primary users, the transmission power of cognitive radios must be carefully managed. In this paper, we analyze the sum transmission power of a group of randomly distributed but fully cooperated secondary transmitters in a network consisting of one primary transmitter and multiple randomly distributed primary receivers. The sum power is given by numerical integrations, or by closed-form approximate expressions. The results indicate that significant secondary transmission power is allowable, depending on the distance of primary and secondary transmitters, as well as the numbers of primary receivers and secondary transmitters. Such results are verified in simulations.Index Termscognitive radio, dynamic spectrum access, transmission power, signal to interference and noise ratio (SINR) 978-1-4244-2247-0/08/$25.00 ©2008 IEEE.

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Section: Sum Transmission Power Of Multiple Secondary Transmittersmentioning

confidence: 99%

Section: Sum Transmission Power Of Multiple Secondary Transmittersmentioning

confidence: 99%

Section: Sum Transmission Power Of Multiple Secondary Transmittersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Sum transmission power of multiple cooperative secondary transmitters in dynamic spectrum access networks

Hwu

Chen

2008

2008 42nd Annual Conference on Information Sciences and Systems

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“…Some researchers have carried on the beneficial exploration CAJ‐based military communication technology. In literature, Li analyze theoretically the jamming capacity of cognitive jammer and the antijamming performance of cognitive wireless network. A high frequency radio prototype system based on dynamic spectrum antijamming is reported in Zhu et al The competing cognitive resilient network, which can optimize data throughput and networking efficiency under DSA and adversarial threats, is introduced in Dastangoo et al These studies have concentrated on CAJ system based on half‐duplex (HD) communication mode that have to alternate in time/frequency/code between transmit and receive modes.…”

Section: Introductionmentioning

confidence: 99%

Transmit‐sense‐receive–based cognitive antijamming for airborne ad hoc networks

Qian

Liu

2017

Int J Communication

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In this paper, a transmit-sense-receive mode-based simultaneous transmit-andreceive cognitive antijamming (SCAJ) strategy is proposed to enhance spectrally efficient of airborne networks in congested electromagnetic spectrum environment.We explore the performance of spectrum sensing based on energy detection in SCAJ system. The tight close form expressions of jamming detection and false-alarm probability are derived under different channels, the throughput of individual SCAJ system is analyzed, and SCAJ transceiver-based airborne ad hoc network capacity is presented for air platform equipping with digital beamforming antennas. Simulation results show that proposed SCAJ technology can improve the antijamming capability and airborne ad hoc network capacity compared to the half-duplex cognitive antijamming scheme. It is an effective approach to solve the problem of designing airborne networks arise from the limited availability of spectrum and the desire to provide much higher data rates. without central coordination among the radios. However, it still has no opportunity to exploit the spectrum hole to transmit signal, so as to prevent EM interference from the internal and external RF equipment. Recently, cognitive radio (CR)-based antijamming (CAJ) communication technology was put forward. It can implement high efficient information transmission using available spectrum holes by spectrum sensing; therefore, the ATN performance can be greatly improved in a congested EM spectrum scenario.Cognitive radio has arisen commercially over the last decade, enabling dynamic spectrum access (DSA) scheme to share open spectrum. 1 The goal of DSA is to relieve the lack of EM spectrum, which is the scarcest resource to implement wireless communication. Most involved the study of CR has considered that secondary (unlicensed) users (SU) use the spectrum holes of primary (licensed) users (PU) without interfering primary communication and developed DSA mechanism to opportunistically access the licensed frequency channel. Consequently, spectrum sharing between PU and SU has been achieved, and spectral efficiency of wireless network is to be maximized.In this paper, the use of CR for antijamming wireless communication operating in ATN is conceived, where malicious jammers exist in addition to scarce EM spectrum. Because of the limitation of the congested EM spectrum resource among tactical radios, it is challenging to extend cognitive antijamming to airborne ad hoc networks operating in environments where electronic attacks and little infrastructure exist. Therefore, it is imperative that future tactical radios can dynamically to use the spectrum resources efficiently.Some researchers have carried on the beneficial exploration CAJ-based military communication technology. In literature, 2-4 Li analyze theoretically the jamming capacity of cognitive jammer and the antijamming performance of cognitive wireless network. A high frequency radio prototype system based on dynamic spectrum antijamming is reported in Zhu et al. 5 The competing ...

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Digital discriminator circuit design based on DSP

Zhongming

Chen

2012

2012 2nd International Conference on Consumer Electronics, Communications and Networks (CECNet)

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Transmission Power and Capacity of Secondary Users in a Dynamic Spectrum Access Network

Cited by 6 publications

References 6 publications

Sum transmission power of multiple cooperative secondary transmitters in dynamic spectrum access networks

Sum transmission power of multiple cooperative secondary transmitters in dynamic spectrum access networks

Transmit‐sense‐receive–based cognitive antijamming for airborne ad hoc networks

Digital discriminator circuit design based on DSP

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