Spectral Efficiency Optimized Adaptive Transmission for Interfering Cognitive Radios

Taki, Mehrdad; Lahouti, Farshad

doi:10.1109/iccw.2009.5208057

Cited by 12 publications

(11 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Two issues have not been satisfactory addressed in the works on adaptive modulation and power control [8] [9], which are related to our context. Firstly, it is assumed that adaptive modulations are adopted by both primary and secondary users to guarantee their own BER performances.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…In [7]- [9], power and rate adaption schemes are studied for CR transmission which impose interference at the PR. The sum of SU utility functions is maximized in [7], while the SU transmission rate is maximized in [8] [9]. In [9] the average spectral efficiency of the secondary link is maximized subject to BER and power constraints, while maintaining an average spectral efficiency for the primary link.…”

Section: Introductionmentioning

confidence: 99%

“…The sum of SU utility functions is maximized in [7], while the SU transmission rate is maximized in [8] [9]. In [9] the average spectral efficiency of the secondary link is maximized subject to BER and power constraints, while maintaining an average spectral efficiency for the primary link. The case of one SU pair and one PU pair is studied in a very recent work [10] that exploits the PU channel state information for CR systems.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

On Power and Rate Adaptation for Cognitive Radios in an Interference Channel

Chai

2010

2010 IEEE 71st Vehicular Technology Conference

View full text Add to dashboard Cite

We study the optimal power and rate adaptation for cognitive radio (CR) transmission, which maximizes the average spectral efficiency of the secondary user transmitter (ST) subject to average BER constraint for secondary user receiver (SR) and average BER or interference constraint at primary user receivers (PR). Adaptive power and rate adaptation is adopted by the ST to guarantee the performances of both PR and SR, while constant power and fixed modulation is used by the PT. It is shown that in addition to the channel gains of the secondary user (SU), the ST also needs to know the primary user (PU) channel gains, the BER and SINR at the PR. Numerical results on the spectral efficiency of the SU are presented as function of various PU and SU channel gains.Index Terms-cognitive radio (CR) transmission, power and rate adaptation, adaptive modulation, average spectral efficiency, bit error rate (BER).

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

On Power and Rate Adaptation for Cognitive Radios in an Interference Channel

Chai

2010

2010 IEEE 71st Vehicular Technology Conference

View full text Add to dashboard Cite

show abstract

“…Given PU activity, we first derive the bit error rate (BER) for an SU link. Derivation of BER for a given SU link is important since it can be used as a metric to determine a given SU link quality which has not been considered in the schemes [8], [10], [11], [9], [13], [14], [17]. Moreover, the BER of a PTC based communication system has not been provided in [15], [16].…”

Section: Introductionmentioning

confidence: 99%

Performance of Permutation Trellis Codes in Cognitive Radio Networks

Bardan

Maşazade

Özdemir

et al. 2012

2012 35th IEEE Sarnoff Symposium

View full text Add to dashboard Cite

Abstract-In this paper, we investigate the error correction performance of Permutation Trellis Codes (PTC) combined with M -ary Frequency Shift Keying (M -FSK) modulation in Cognitive Radio Networks (CRNs). Using this modulation technique, a secondary user (SU) can improve its data rate by increasing its transmission bandwidth while operating at low power and without creating destructive interference to the primary users (PUs). Given an active PU, we first derive the bit error rate (BER) of the PTC based M -FSK system for a given SU link. For different PTCs, we compare the analytical BER with the corresponding simulation results. For the same transmitting power, bandwidth availability and transmission time, simulation results show that for a SU link, M -FSK scheme using PTC provides better protection against the interference caused by the PU than M -FSK schemes employing conventional error correction coding such as convolutional and low density parity check (LDPC) codes.

show abstract

Cognitive Radio Communication System: Spectrum Sharing Techniques

Pandit

Singh

2017

Spectrum Sharing in Cognitive Radio Networks

View full text Add to dashboard Cite

Spectral Efficiency Optimized Adaptive Transmission for Interfering Cognitive Radios

Cited by 12 publications

References 19 publications

On Power and Rate Adaptation for Cognitive Radios in an Interference Channel

On Power and Rate Adaptation for Cognitive Radios in an Interference Channel

Performance of Permutation Trellis Codes in Cognitive Radio Networks

Cognitive Radio Communication System: Spectrum Sharing Techniques

Contact Info

Product

Resources

About