Optimal Channel Switching Strategy for Average Capacity Maximization

Sezer, Ahmet Dündar; Gezici, Sinan; İnaltekin, Hazer

doi:10.1109/tcomm.2015.2422813

Cited by 8 publications

(59 citation statements)

References 43 publications

(92 reference statements)

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“…As investigated in the remainder of the study, the partial transmission strategy may yield higher average probabilities of correct decision in certain scenarios than the full transmission strategy and can be the solution of the optimization problem in (13). In such scenarios, no transmission during a certain period of time facilitates a more efficient usage of the cost budget.…”

Section: Remarkmentioning

confidence: 99%

“…Since (13) can easily be solved for A c ≥ C 1 , the case of A c < C 1 is considered in the remainder of the study. It is straightforward to show that the solution of the problem in (13) always satisfies the average power constraint with equality since h i (P ) is a monotone increasing function of P for all i ∈ {1, .…”

Section: Based On the Ordering Of The Channel Costs It Is Clear That Ifmentioning

confidence: 99%

“…Performance enhancements via time sharing can also be realized in communication systems where the transmitter and the receiver are connected through multiple channels [3,[10][11][12][13]. In such a scenario, channel switching can be performed by transmitting over a channel during a certain period of time and switching to another channel during the next period.…”

Section: Introductionmentioning

confidence: 99%

“…It is demonstrated that the optimal strategy is to employ deterministic signaling or time sharing between at most two signal constellations over a single channel, or to perform channel switching between two channels with deterministic signaling. The benefits of channel switching are investigated in [13] for additive Gaussian noise channels under average and peak power constraints, where the objective is to maximize average channel capacity. It is proved that the optimal solution performs channel switching between at most two different channels.…”

Section: Introductionmentioning

confidence: 99%

“…The previous studies on the channel switching problem mainly employ the average probability of error [3,10,11] or the average channel capacity [13] as the objective functions, and assume that the channels are fully utilized; i.e., there always exists transmission over one of the channels and there are no idle periods. In this manuscript, the channel switching problem is investigated for maximizing the average number of correctly received symbols in the absence of the full transmission/utilization constraint.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Maximization of average number of correctly received symbols over multiple channels in the presence of idle periods

Keskin

Kurt

Tutay

et al. 2016

Digital Signal Processing

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In this study, optimal channel switching (time sharing) strategies are investigated under average power and cost constraints for maximizing the average number of correctly received symbols between a transmitter and a receiver that are connected via multiple flat-fading channels with additive Gaussian noise. The optimal strategy is shown to correspond to channel switching either among at most three different channels with full channel utilization (i.e., no idle periods), or between at most two different channels with partial channel utilization. Also, it is stated that the optimal solution must operate at the maximum average power and the maximum average cost, which facilitates low-complexity approaches for obtaining the optimal strategy. For two-channel strategies, an upper bound is derived, in terms of the parameters of the employed channels, on the ratio between the optimal power levels. In addition, theoretical results are derived for characterizing the optimal solution for channel switching between two channels, and for comparing performance of single channel strategies. Sufficient conditions that depend solely on the systems parameters are obtained for specifying when partial channel utilization cannot be optimal. Furthermore, the proposed optimal channel switching problem is investigated for logarithmic cost functions, and various theoretical results are obtained related to the optimal strategy. Numerical examples are presented to illustrate the validity of the theoretical results.

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Section: Remarkmentioning

confidence: 99%

Section: Based On the Ordering Of The Channel Costs It Is Clear That Ifmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Maximization of average number of correctly received symbols over multiple channels in the presence of idle periods

Keskin

Kurt

Tutay

et al. 2016

Digital Signal Processing

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Optimal channel switching in multiuser systems under average capacity constraints

Sezer

Gezici

2017

Digital Signal Processing

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In this paper, the optimal channel switching problem is studied for average capacity maximization in the presence of multiple receivers in the communication system. First, the optimal channel switching problem is proposed for average capacity maximization of the communication between the transmitter and the secondary receiver while fulfilling the minimum average capacity requirement of the primary receiver and considering the average and peak power constraints. Then, an alternative equivalent optimization problem is provided and it is shown that the solution of this optimization problem satisfies the constraints with equality. Based on the alternative optimization problem, it is obtained that the optimal channel switching strategy employs at most three communication links in the presence of multiple available channels in the system. In addition, the optimal strategies are specified in terms of the number of channels employed by the transmitter to communicate with the primary and secondary receivers. Finally, numerical examples are provided in order to verify the theoretical investigations.

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A Game Theoretic Approach to Channel Switching in the Presence of Jamming

et al. 2021

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In this letter, a channel switching problem is investigated in the presence of jamming based on a game theoretic approach. First, a convex formulation of the optimal channel switching problem is proposed for a given jamming strategy. Then, considering a fixed channel switching strategy, an explicit solution of the optimal jammer power allocation problem is obtained. Consequently, a game theoretic formulation is proposed and the existence of a pure-strategy Nash equilibrium is shown for the proposed channel switching game between the transmitter and the jammer.

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Optimal Channel Switching Strategy for Average Capacity Maximization

Cited by 8 publications

References 43 publications

Maximization of average number of correctly received symbols over multiple channels in the presence of idle periods

Maximization of average number of correctly received symbols over multiple channels in the presence of idle periods

Optimal channel switching in multiuser systems under average capacity constraints

A Game Theoretic Approach to Channel Switching in the Presence of Jamming

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