Mobile number portability (MNP): service providers perspective (pros & cons)
03 Sep 2012-pp 173-176
TL;DR: The pros and cons of Mobile Number Portability are looked into, which enables subscribers to switch their service providers while retaining their mobile numbers.
Abstract: Lock in of mobile number series with Telecom Service Providers has always been an impediment to ushering in healthy competition between the mobile carriers. While India has seen a rapid growth in the penetration of Telephony services, the same exponential growth is seen lacking when it comes to quality of service offered or openness of transaction with the large players. Though the initial enrolment of subscribers to specific carriers has an atmosphere of enthusiasm and a promise of quality around it, subsequently there is marked degradation in quality of service. Customers are discouraged to switch service providers as that would involve changing numbers and possibility of lost calls for the end user. Mobile Number Portability (MNP) is a technology that enables subscribers to switch their service providers while retaining their mobile numbers. Deceptively trivial in terms of nomenclature, the underlying technology that realizes this is quite complex and neatly integrated into the telephony infrastructure. The other significant aspect is the fact that MNP has reached the Indian shores in mid 2010. The TSP's have been mandated to adopt MNP and it has created lot of action and opportunity. The country as of now has 800 million mobile subscribers, as quoted by TRAI. Going by the Telecom Regulatory Authority of India (TRAI) guidelines, mobile users will be allowed to use the same mobile number even if providers use different mobile technologies like CDMA (code division multiple access) or GSM (Global System for Mobile Communications). This paper is thus looking into the pros and cons of MNP for Telecom Service Providers.
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More filters
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TL;DR: Several closely related estimators are proposed whose main characteristics are simplicity, accuracy, and ease of online or offline implementation for moderately high signal-to-noise ratios they are unbiased and attain the Cramer-Rao bound.
Abstract: The problem of the parameter estimation of chirp signals is addressed. Several closely related estimators are proposed whose main characteristics are simplicity, accuracy, and ease of online or offline implementation. For moderately high signal-to-noise ratios they are unbiased and attain the Cramer-Rao bound. Monte Carlo simulations verify the expected performance of the estimators. It should be easy to extend this approach to signals having polynomials of any degree in the exponent. All the derivations will be done under the assumption that the signal-to-noise ratio is sufficiently high. >
395 citations
TL;DR: In this article, the authors proposed a method for detecting a chirp in the time-frequency plane based on line integration with respect to optimality and adequacy of a representation.
83 citations
08 Aug 2011
TL;DR: An estimation method based on an approximate linear state space representation of the chirp signal is considered, offering the opportunity to use an extended Kalman filtering procedure in view to estimate the parameters of polynomial phase signals.
Abstract: This paper addresses the problem of estimating linear and quadratic chirp signal parameters. We consider an estimation method based on an approximate linear state space representation of the chirp signal. This approach offers the opportunity to use an extended Kalman filtering procedure in view to estimate the parameters of polynomial phase signals. Procedure simulations were made on linear and quadratic chirp sinusoids with time-varying amplitude embedded in additive white Gaussian noise and are consistent with the theoretical approach. The paper presents the most important results.
16 citations
01 Aug 2004
TL;DR: A LabVIEW-based book being written for the purpose of furnishing a textbook for DSP laboratory courses offered at many engineering schools is introduced, showing how DSP systems are designed using the LabVIEW graphical programming environment.
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10 citations