By exploiting the electromagnetic wave's four-dimensional signal space, we find that for the additive white Gaussian noise channel, the modulation format with best sensitivity to be an 8-level format with 1.76 dB asymptotic gain over BPSK, for uncoded optical transmission with coherent detection. Low-complexity modulators are presented for the format, as well as an interpretation in terms of qu...

binary phase-shift keying (BPSK) format is deployed where the phase is modulated by either an external phase-modulator or injection-locking methods. The phase limitation and the performance for both phase-modulations including multiple access interferences (MAI) in a shot-noise limited regime are studied and moderate penalty associated with the limited phase excursion is revealed.

binary phase-shift keying (BPSK) format is deployed where the phase is modulated by either an external phase-modulator or injection-locking methods. The phase limitation and the performance for both phase-modulations including multiple access interferences (MAI) in a shot-noise limited regime are studied and moderate penalty associated with the limited phase excursion is revealed.

Abstract With the continuous research and development of global positioning system in various countries, requirements for accuracy efficiency GPS signals are getting higher higher. To improve performance signal modulation, this focuses on BPSK modulation BOC introduces basic principles practical uses two signals. Based disadvantage weak anti-noise modulated high ambiguity signal, algorithms sig...

This paper considers the detection performance of a serial thresholding receiver for preceded bina~ GMSK signal with BT=O. 5. The conditional symbol (biij error probability of the GMSK signal with carrier phase and timing errors is derived and compared to that of unfiltered BPSK. It is shown that the GMSK signal has practically the same performance as the ideal BPSK signal in the absence of syn...

Abstract The main aim of this review is to describe in detail an advanced technique detect and estimate the prior unknown parameters intra-pulse modulated signals verification with typical radar signals. method approved for detecting successfully, including chirp rate, carrier frequency, pulse width. presents already-done research on estimating single multi-component linear frequency modulation...

In this paper, we test the performance of Space-Time Block Coding (STBC) technique applied to the Power Line channel. Two modulation types are implemented; 4PAM and BPSK. We examine the effect of Convolutional coding and the presence/absence of interleaving. The simulation results are focused on the Bit Error Rate (BER) performance of the system.

Festoon links are single span subsea links that require no electrically powered amplifiers. Providing longer reach on these types of links enables cost effective, high bandwidth connectivity to more remote locations. TCM-QPSK is an innovative modulation format that works with the hard FEC generation of line cards to provide 2.0dB of extended reach on festoon links compared to differentially cod...

The impact of diversity combining on the matched filter bound of BPSK on time-discrete multipath slowly Rayleigh fading intersymbol interference channels is analysed. Expressions for the bound are derived for SNR selection, S+N selection, and also equal gain diversity combining. Numerical results for the derived bounds are presented on a GSM typical urban channel model.