Pulse Position Modulation

Performance analysis of a hybrid QAM-MPPM technique over turbulence-free and gamma-gamma free-space optical channels
The performance of a hybrid M-Ary quadrature amplitude modulation multi-pulse pulse-position modulation (hybrid QAM-MPPM) technique is …
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SER Analysis of MPPM-Coded MIMO-FSO System over Uncorrelated and Correlated Gamma-Gamma Atmospheric Turbulence Channels
The performance of multiple-input multiple-output free space optical (MIMO-FSO) communication systems, that adopt multipulse pulse …
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Closed-form expressions for the lower-bound performance of variable weight multiple pulse-position modulation optical links through turbulent atmospheric channels
In this study, we derive the analytical expression for the lower-bound performance of the light intensity fading induced by turbulence …
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Novel block coding method for rate-adaptive optical wireless communications systems
In this paper, a novel rate-adaptive transmission scheme using block codes with codewords of variable Hamming weight is presented. This …
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Angle diversity with rate-adaptive transmission using repetition coding and variable silence periods for wireless infrared communications
In this paper, the simultaneous use of a simple rate-adaptive transmission scheme based on the use of variable silence periods and a …
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Self-orienting receiver using rate-adaptive transmission based on OOK formats with memory for optical wireless communications
In this paper, the simultaneous use of a simple rate-adaptive transmission scheme, based on on-off keying (OOK) formats with memory, …
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Novel approach for increasing the peak-to-average optical power ratio in rate-adaptive optical wireless communication systems
A new and simple rate-adaptive transmission scheme for indoor unguided optical links is proposed. This scheme is based on the use of …
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Improving PPM schemes in wireless infrared links at high bit rates
In this letter, the authors conclude that pulse-position modulation (PPM) with Gaussian pulses provides better performance than classic …
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Large change rate-adaptive indoor wireless infrared links using variable silence periods
A new and simple rate-adaptive transmission scheme for indoor unguided optical links in proposed. The scheme is based on the use of …
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Comparison of improved OOK formats with pulse-position modulation in indoor unguided optical links at high bit rates
In this paper, on-off keying (OOK) formats with different pulse shapes and pulse-position modulation (4PPM) for indoor unguided optical …
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