Game theoretic frequency reuse approach in OFDMA femtocell networks

Ghosh, Joydev; Jayakody, Dushantha Nalin K.

doi:10.1002/ett.3440

Cited by 13 publications

(13 citation statements)

References 31 publications

(42 reference statements)

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“…Here this system model has been shown in contrast to the reference [22] that the networks where open and close access modes between a FBS and a user respectively have a substantial role in spectrum sharing cost and femtocell power adaptation even for wide-reaching macrocells. Extending from [22], utility function and payoff function obtained in a cellular network consisting FBSs as a cluster at the macrocell edges have been analytically demonstrated further by considering the significant roles of the access modes in the proposed network model. Besides, the trade-off studies of EE and payoff functions in the proposed network model have been performed to find stability point in the game by means of their concavity downward response, whereas the solution of stability condition in the game has been carried out by applying nash equilibrium is presented in [22].…”

Section: Introductionmentioning

confidence: 83%

“…An analytical model development of a basic structure underlying a two-layer network is performed to investigate and probe the different metrics such as utility function, payoff function, access policy and energy efficiency in comparison to that of two-layers network where FBSs are grouped into different clusters at the macrocell edges as presented in [22]. Here this system model has been shown in contrast to the reference [22] that the networks where open and close access modes between a FBS and a user respectively have a substantial role in spectrum sharing cost and femtocell power adaptation even for wide-reaching macrocells. Extending from [22], utility function and payoff function obtained in a cellular network consisting FBSs as a cluster at the macrocell edges have been analytically demonstrated further by considering the significant roles of the access modes in the proposed network model.…”

Section: Introductionmentioning

confidence: 99%

“…Extending from [22], utility function and payoff function obtained in a cellular network consisting FBSs as a cluster at the macrocell edges have been analytically demonstrated further by considering the significant roles of the access modes in the proposed network model. Besides, the trade-off studies of EE and payoff functions in the proposed network model have been performed to find stability point in the game by means of their concavity downward response, whereas the solution of stability condition in the game has been carried out by applying nash equilibrium is presented in [22]. In addition to the above, femtocell power adaptation algorithm is proposed articulating more on power fine-tuning at the BSs, whereas search algorithm has been introduced as in [22] for seeking the best strategy to deal with femto user's best response.…”

Section: Introductionmentioning

confidence: 99%

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Energy Efficiency Analysis by Game-Theoretic Approach in the Next Generation Network

Ghosh

2019

IETE Technical Review

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In downlink orthogonal frequency division multiple access (OFDMA) networks, an effective way of using the limited wireless spectrum resources can significantly improve network response. This paper presents a game-theoretic scheme with anticoordinated players by incorporating adaptation of femto base station (FBS) transmit power, attenuation of interference and utility function for open access mode and closed access mode respectively. The deployment of femtocells in the networks is to produce improved energy efficiency (EE) and optimized reponse of payoff function. In open access mode, each user belongs to the operator's network can connect to the FBS and in closed access case, only a specified set of users can privately couple to the FBS whereas in the early access scenario it only allows authentic subscribers to take the advantage of femtocell networks. Additionally, the operating principle of spectrum sharing scheme has been discussed in which FBS as a player acquire knowledge from utility responses of their strategic communications and revise their strategies at each level of the game process. Here, an FBS is regarded as a player in the game to select the users who are satisfied to a greatest extent and an FBS plays a role of mentor. Thereafter, the equilibrium concept has been invoked to aid the anti-coordinated players for the strategies. Besides, a femtocell power adaptation algorithm has also been introduced based upon the set of enabled femtocells who can be used to retain its blocking probability that guarantees convergence to the stable strategy of the game, where the FBS monitors the subscribers' actions and gives only limited data exchange. The simulations demonstrate that the proposed algorithm attains a high quality performance such as rapid convergence, interference attenuation to a greatest extent, noticeable EE improvement etc. Finally, validate the simulation results with its rarely studied extension in cognitive femtocell networks.

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Section: Introductionmentioning

confidence: 83%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Energy Efficiency Analysis by Game-Theoretic Approach in the Next Generation Network

Ghosh

2019

IETE Technical Review

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“…Some different methods are also presented in the past for the furtherance of spectrum allocation. Ghosh and Jayakody presented the use of the game theoretic frequency reuse method for utilizing the spectrum allocation more methodically. They have used the noncooperative game method, and Nash equilibrium (NE) has been chosen as the solution.…”

Section: Related Workmentioning

confidence: 99%

A novel analytical model for interference estimation in CR‐enabled femtocells

Singh

Kumar

Mishra³

et al. 2019

Int J Communication

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advancements in the direction of indoor implementation. A femtocell is a low-cost, short-range, and low-power system (also known as home base stations [BSs]) that reduces transmit-receive distance and achieves a higher signal-to-interference-plus-noise ratio (SINR). 1,2 A pedagogical view of the femtocell system, which includes its origin, uplink and downlink modeling, challenges, interference coordination, cell association and biasing, mobility and soft handover, and regulatory aspects, have been presented in Andrews et al. 3 Because of its ease of integration with existing third generation (3G) (code-division multiple access [CDMA]) and fourth generation (4G) (long-term evolution [LTE] advanced) technologies 4,5 and because of its coverage in the cellular dead zone and indoor environments, its demand has increased for a long time. However, the modeling or mitigation of interference 6 and the analysis of interference 7,8 have become more challenging issues for indoor wireless communication.CR is a widely used technology that not only incorporates intelligence into the system but also deals with spectrum scarcity. It was introduced by Mitola and Maguire 9 and defined as a radio system that understands the context of existence in an environment of communication and optimally sets parameters in the communication process. In other studies, 10,11 authors described the cognitive network architecture, characteristics, network components, and overview of its main aspects: spectrum sensing, spectrum decision, spectrum sharing, and spectrum mobility. Femtocells and the CR are envisioned as a promising approach in the modern wireless system, and they must be incorporated in future networks. At the same time, random deployment of femtocell BS (FBS) nodes without coordination with macrocell BS (MBS) 12 introduces interference between primary links (link between MBS and macrocell user equipment [MUE]) and secondary links (link between FBS and femtocell user equipment [FUE]). Interference coordination in the described heterogeneous network can be possible by making femtocell nodes intelligent to identify the transmission environment and adjust their configurations. By using CR capabilities, the mutual interference between primary links, ie, the link between MBS and MUE, and secondary links, ie, the link between FUE and FBS, can be restricted. This cognitive feature in femtocell nodes, also known as home eNode BSs (HeNBSs), is called cognitive femtocell networks. 13,14 All the very facts mentioned above are the motivation behind proposing an interference model and presenting various analytical expressions for the estimation of interference for CR-enabled femtocells. However, a complete survey on related works is presented separately in the next section in which the existing advantages and shortcomings are discussed. In addition, major contributions of the current work are listed (which reflect advantages of the proposal) at the end of the next section.

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“…The motivation for this work issued from a challenging compromise between two factors; on one hand the use, of broadband spectrum offers high throughputs and leads to pair massive Machine-Type Communications (mMTC) in indoor channels, while on the other hand, using millimeter wave (mmWave) signals in such channel types generates dense multipath components [6][7][8][9][10][11][12][13][14][15]; this is because the wavelengths of these signals are very close to the dimensions of small indoor obstacles, such as screws, buttons, pen heads , etc.…”

Section: Introductionmentioning

confidence: 99%

Towards 5G wireless systems: A modified Rake receiver for UWB indoor multipath channels

Ghendir

Sbaa

Al-Sherbaz

et al. 2019

Physical Communication

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This paper presents a modified receiver based on the conventional Rake receiver for Ultra-Wide Band (UWB) indoor channels of femtocell systems and aims to propose a new solution to mitigate the multipath phenomenon. Furthermore, this work proposes an upgrade for the conventional Rake receiver to fulfill the needs of 5G wireless systems through a new concept named "hybrid femtocell" that joins UWB with millimeter wave (mmWave) signals. The modified receiver is considered to be a part of the UWB/mmWave hybrid femtocell system, where it is developed for confronting the indoor multipath channels and to ensure a flexible transmission based on an Intelligent Controlling System (ICS). Hence, we seek to exploit the circumstances when the channel is less complex to switch the transmission to a higher data rate through higher M-ary Pulse Position Modulation (PPM). Furthermore, an ICS algorithm is proposed and an analytical model is developed followed by performance studies through simulation results. The results show that using the UWB technology through the modified receiver in femtocells could aid in mitigating the multipath effects and ensuring high throughputs. Thus, the UWB based system promotes Internet of Things (IoT) devices in indoor multipath channels of future 5G.

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Game theoretic frequency reuse approach in OFDMA femtocell networks

Cited by 13 publications

References 31 publications

Energy Efficiency Analysis by Game-Theoretic Approach in the Next Generation Network

Energy Efficiency Analysis by Game-Theoretic Approach in the Next Generation Network

A novel analytical model for interference estimation in CR‐enabled femtocells

Towards 5G wireless systems: A modified Rake receiver for UWB indoor multipath channels

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