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This paper proposes a novel manipulated rotating polarization switched quadrature phase shift keying (MR-PS-QPSK) technique, and correlated constant modulus algorithm (CMA). The latter utilizes the correlation between PS-QPSK symbols in X/Y polarizations to lock the phase of outputted X/Y signals. Then the X/Y signals are merged according to recovered switching bit, which suppresses the noise and...
With the fast progress in academic research, the transmission capacity over the single mode fiber (SMF) has been demonstrated more than 100 Tb/s, together with wavelength division multiplexing (WDM), polarization division multiplexing (PDM), coherent detection, and higher-order modulation formats. However, 100 Tb/s is considered as the capacity limit of SMF, which is constrained by the fiber nonlinearity...
Multiband discrete Fourier transform spread (DFT-S) is a promising technology to reduce peak-to-average power ratio and mitigate the fiber nonlinearity. We investigate DFT-S coherent optical orthogonal frequency division multiplexing (CO-OFDM) in terms of computational complexity and nonlinearity. With the nonlinearity improvement, 450-Gb/s two-band DFT-S CO-OFDM outperforms conventional CO-OFDM,...
In this paper we proposed two extensions to the recently proposed Phase Forward (PF) relaying strategy for cooperative communication. One extension is the replacement of CPFSK modulation by the more practical Gaussian filtered minimum shift keying (GMSK) modulation scheme. The second extension is the incorporation of antenna selection at the relay. Semi-analytical expressions for the bit error probabilities...
We propose in the paper the concept of phase forward (PF) as a possible relay strategy for cooperative communication involving CPFSK modulation in a "fast" fading environment. The technique enables the relay nodes to maintain constant envelop signaling without the need to perform decoding and signal regeneration. To further reduce complexity, we adopt noncoherent discriminator detection...
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