The continuous phase property of Continuous Phase Modulation (CPM) makes it possible to define spectrally efficient digital modulation schemes with a narrow spectral main lobe and small spectral side lobes by using a small modulation index, a non-binary alphabet size and a smooth phase pulse [1]. The constant envelope property of CPM also allows the use of non-linear amplifiers, which have lowe...

Abstract—We derive upper bounds on the capacity of an additive Gaussian noise channel with continuous phase modulation (CPM). We propose an MMSE approximation to Laurent’s linear decomposition using an arbitrary number of filtered, linearly modulated pulses. Using this linear modulation structure, we derive capacity bounds for both white and colored noise channels with CPM modulation by showing...

A generic CPM scheme can be decomposed into a continuous-phase encoder (CPE) and a memoryless modulator (MM). The CPE can be combined with a channel encoder (CE). This creates an extended CE, as the CPE is now an extension of the CE. In this paper, a 1⁄2 rate quaternary CE is combined with a quaternary CPE. The CE used here is a convolutional encoder, thus, the extended CE is also a convolution...

Certain problems associated with reliable digital wireless communication over a frequency-flat slow Rayleigh fading channel are treated, when the transmitted signal is modulated using continuous phase modulation (CPM) due to the desirable properties of CPM. The primary focus of attention is on detection strategies, and the thesis proposes iterative detection algorithms for CPM signals transmitt...

The weak nonlinear Kerr interaction between single photons and intense laser fields has been recently proposed as a basis for distributed optics-based solutions to few-qubit applications in quantum communication and computation. Here, we analyse the above Kerr interaction by employing a continuous-time multi-mode model for the input/output fields to/from the nonlinear medium. In contrast to pre...

prayer and care have made my family and me experience God's blessing. I would also like to express my gratitude and love to my parents, brother, and sisters for their love and encouragement. Last but most, I would like to express my sincerest thanks to my wife Youjin and our children Hay-oung, Hamin, and Hajin. Their unbounded sacrifice, belief, and love made me complete my Ph.D. work. In addit...

in this paper first we try to analysis the behavior ofthe soas in the optical networks and then have proposed anumerical simple model to simulate the behavior of thesemiconductor optical amplifiers. after that by employing thismodel as inline amplifier for a dwdm optical system, we havesimulated the transmission of 10 channels with bit rate 10 gb/sup to distance 3970 km with rz-dpsk modulation ...

A coherent random-modulated continuous-wave (RMCW) LiDAR transmits a lightwave modulated by pseudo-random binary sequence (PRBS). The backscattered from targets is received and used to reconstruct the PRBS. Then, time-of-flight extracted correlating reconstructed PRBS original We propose RMCW based on phase-coded subcarrier modulation, in which impacts of internal reflection optical Doppler fre...