Adaptive Modulation for Limited Diversity Fading Channels

Nagaraj, Santosh; Sarkar, Mitali

doi:10.1109/vetecf.2009.5378689

Cited by 4 publications

(2 citation statements)

References 18 publications

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“…Each of the subcarrier may consist of the different power. OFDM systems was proposed were the power loading for minimization of the symbol error probability has been considered [6], [7] and [8]. In order to distinguish such kind of the problems from the single-user power loading than researchers call that type of problem of power allocation.…”

Section: Introductionmentioning

confidence: 99%

Implementation of Cell Zooming Technique to Optimize the Base Station Power

Gundawar¹,

Dorge²,

Gode³

2015

International Journal of Innovative Research in Electrical, Ele

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This paper investigate the problem regarding the minimization of the power of the base station by using the cell zooming technique. In this paper, we mainly focused on reducing the power consumed at the base station end, whereas most of the power minimization related work in the literature today is focused on the mobile end only. Cell zooming is a technology that promises to minimize the resource utilization. This technique is designed to save the energy consumed by the base station by maintaining the quality of services. To understand the working of the cell zooming techniques centralized algorithm is a very basic way. Our simulations shows that the proposed technique can achieve upto 25% reduction in the power consumption over the base station.Keywords: Cell zooming, Traffic load, energy efficiency, base stations, bandwidth utilization, spectral efficiency, orthogonal frequency division multiplexing (OFDM) and power allocation. I.INTRODUCTION As we all know that mobile wireless communication is experiencing a tremendous growth today in terms of both the various number of users as well as the variety of applications coming day by day. As millions of new users are including each and every month. The mobile applications are changing from simple voice applications to data and than to gaming devices. To all of us, the word 'mobile' is very familiar, and its necessary to think much about its operation parts. As we all know that the mobile is very user friendly, that why it is not the case when it came into its operational cost. Communication is the process that should be maintained all the time and each of the base station is designed to operate 24*7 hours. The number of base stations are deployed to the order of tens during the early decades. As most of the users are interested in data transfer rather than the voice transfer and therefore their is an increasing demand of the resources. Inorder to satisfy the users requirements the operator has to work hard as the users requirements are increasing day by day. The basic concepts regarding the cell zooming technique is very clearly explained in [3].

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Section: Introductionmentioning

confidence: 99%

Implementation of Cell Zooming Technique to Optimize the Base Station Power

Gundawar¹,

Dorge²,

Gode³

2015

International Journal of Innovative Research in Electrical, Ele

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“…To improve the spectrum efficiency, adaptive modulation and power allocation could be employed [7][8][9], which require feedback. In precoding-based adaptive modulation systems, CSI (including precoding matrix information) must be sent to the transmitter.…”

Section: Introductionmentioning

confidence: 99%

Adaptive modulation with finite rate feedback for QR decomposition‐successive interference cancellation‐based multiple‐in multiple‐out systems

Zhang

Liu³

2013

IET Communications

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This article studies adaptive modulation for QR decomposition and successive interference cancellation receivers in multiple-input multiple-output systems over slow-and fast-fading channels. In slowly fading channels, adaptive modulation schemes with finite-rate feedback under the constraints of a constant total transmit power, discrete-rate and a target bit-errorrate (BER) are proposed. Specifically, the authors first develop adaptive modulation with modulation order feedback only. For power allocation and modulation order feedback, the authors establish an optimisation scheme that can be solved easily and analyse the effect of power-level quantisation on the achievable data rates. For the fast fading channel case, the authors analyse the probability distribution of the 'R' matrix and derive a scheme that only requires feedback of the statistical information of the channel for adaptive modulation with optimal bit loading to guarantee that the BER target is met.

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A novel power allocation technique for 4G cellular networks

Nagaraj

Sarkar

2014

2014 International Conference on Computing, Networking and Communications (ICNC)

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Adaptive Modulation for Limited Diversity Fading Channels

Cited by 4 publications

References 18 publications

Implementation of Cell Zooming Technique to Optimize the Base Station Power

Implementation of Cell Zooming Technique to Optimize the Base Station Power

Adaptive modulation with finite rate feedback for QR decomposition‐successive interference cancellation‐based multiple‐in multiple‐out systems

A novel power allocation technique for 4G cellular networks

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