A FPGA based generalized parametrizable modulator

Shah, Avni; Somani, Sunil B.

doi:10.1109/his.2012.6421368

Cited by 2 publications

(3 citation statements)

References 8 publications

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“…Liu and Liu [22] presented a mechanism digitally operating at the linear approximation principle derived from the characteristics of ISI and the partial response of signals. A Generalized Parametrizable Modulator (GPM) is developed by Shah and Somani [23] that performs the GMSK modulation.Sun et al [24] investigated an equalizer architecture and algorithm for cost-effective implementation on FPGA. A coherent detection scheme with carrier recovery circuit for the system of GMSK was introduced by Gao and Feher [25].…”

Section: Existing Implementations In Gmsk Modulation On Fpga and mentioning

confidence: 99%

GMSK Modulator and Demodulator Techniques on Hardware and Software Platform with Research Gaps and Trends

Kajur,

Prasad*

2019

IJITEE

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The modulation system of Gaussian filtered Minimum Shift Keying (GMSK) is a narrow band and constant envelope format that is acceptable for bandwidth, power restricted environment of radio communication. The modulation technique encounters extensive approval from the cellular network market. Nonetheless, the present GMSK modulation scheme is majorly held back due to its two critical shortcomings, the necessity at the receiver section to shape the GMSK's symbol pulses for ISI and the absence of amended GMSK model including the bandwidth efficiency to improvise the link quality. At the moment, rare progressive research studies are being conducted in favor of hardware implementation of GMSK that can satisfactorily be applied to any GSM or AIS application. A standardized algorithm or framework that can guarantee high resiliency is yet to be introduced. Therefore, the paper gives a comprehensive outlook in the direction of understanding the drawbacks that are posed for the implementation of GMSK.

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Section: Existing Implementations In Gmsk Modulation On Fpga and mentioning

confidence: 99%

GMSK Modulator and Demodulator Techniques on Hardware and Software Platform with Research Gaps and Trends

Kajur,

Prasad*

2019

IJITEE

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“…The only variation is, instead of the shape of the half-sine pulse the inputs bits form the shape of the Gaussian bell curve. The realization of such shapers is carried using different digital or analog circuits of PCM LUTs [1][2][3][4][5][6][7].The present wireless digital communication systems use different types of modulation techniques to achieve high performance with efficient usage of available spectrum efficiency. The MSK provides the constant envelope signals for power amplification which reduces the problems caused by non-linear distortion, and MSK encodes each bit is like a half sinusoidal.…”

Section: Introductionmentioning

confidence: 99%

“…The American /European countries use GMSK modulation schemes in cellular phones as per GSM standards. The GMSK supports non-linear modulation, which is used for easy implementation on hardware [3][4][5]. If the Radio signal frequency increases in mobile communication and it is difficult to use by conventional technology like DSP, Microcontroller and Microprocessor in the real-time conditions due to its computational complexities.…”

Section: Introductionmentioning

confidence: 99%

Performance Realization of CORDIC based GMSK System with FPGA Prototyping

Kajur¹,

Prasad²

2020

IJACSA

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The Gaussian Minimum Shift Keying (GMSK) modulation is a digital modulation scheme using frequency shift keying with no phase discontinuities, and it provides higher spectral efficiency in radio communication systems. In this article, the cost-effective hardware architecture of the GMSK system is designed using pipelined CORDIC and optimized CORDIC models. The GMSK systems mainly consist of the NRZ encoder, Integrator, Gaussian filter followed by FM Modulator using CORDIC models and Digital Frequency Synthesizer (DFS) for IQ Modulation in transmitter section along with channel, the receiver section has FM demodulator, followed by Differentiator and NRZ decoder. TheCORDIC algorithms play a crucial role in GMSK systems for IQ generation and improve the system performance on a single chip. Both the pipelined CORDIC and optimized CORDIC models are designed for 6-stages. The optimized CORDIC model is designed using quadrature mapping method along with pipeline structure. The GMSK systems are implemented on Artix-7 FPGA with FPGA prototyping. The Performance analysis is represented in terms of hardware constraints like area, time and power. These results show that the optimized CORDIC based GMSK system is a better option than the pipelined CORDIC based GMSK systems for real-time scenarios.

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A FPGA based generalized parametrizable modulator

Cited by 2 publications

References 8 publications

GMSK Modulator and Demodulator Techniques on Hardware and Software Platform with Research Gaps and Trends

GMSK Modulator and Demodulator Techniques on Hardware and Software Platform with Research Gaps and Trends

Performance Realization of CORDIC based GMSK System with FPGA Prototyping

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