The LPI/LPD communication is a technology of hiding the information into the noise or other useless signals through an efficient modulation, making it difficult for the detector to capture the hidden information. Spread-spectrum communication has good characteristics of LPI/LPD and has been widely used....

Due to the potential application in all-optical signal processing, semiconductor ring laser (SRL) has become one of research hotspots in the present. In this paper, an equivalent SRL was modeled utilizing a numerical device simulator (ATLAS), and the effects of structure parameter on the temperature...

Due to the flexible functions and monolithic integration, semiconductor ring laser (SRL) has become a hot topic in the field of photonic and optoelectronic integration. In this paper, a new threshold current expression suitable for the circular SRL with multiple quantum well (MQW) material structure...

Along with the development of information technology, the impact of information on global economic and social has become more and more profound. Mobile communication (4G) industry has brought huge spillovers to the economic and social benefits. This paper combines theoretical analysis and empirical research...

Nonlinear dynamics of a semiconductor laser subjected external optical is applied to all-optical clock division. By properly adjusting the injection conditions, the divide-by-two clock division and the divide-by-three clock division are achieved base on the period-one oscillation. The divide-by-two clock...

According to the requirements of deep space communication channel coding and referring to the standard parameters of Consultative Committee for Space Data Systems (CCSDS), a high rate LDPC code scheme set for deep space communications is adopted.[1][2] Due to the Low density parity check (LDPC) codes’...

Wireless communication technology between subsystems in satellite can be effective measures for the needs of the development of small satellite system, which has the advantage of fast testing, fast integration and fast assembling. It makes up the existing defect of traditional satellite which used traditional...

This paper investigates the enumeration of a family of perfect quaternary arrays (PQAs) from Zeng, et al’s constructions. By deriving the conditions which result in distinct PQAs, the family size of Zeng, et al’s constructions is determined, and distinct PQAs are educed from the obtained conditions....

To compare the performance of AMOLED screen and LCD screen, the within subject design experiment was adopted in this study. In the dark booth, each of the 30 participants completed three tasks, including display screen brightness adjustment, subjective evaluation and visual object recognition. Paired-samples...

Richards transformation and Kuroda rule are briefly introduced firstly as the theoretical support of the research. Based on the Richards transformation and Kuroda rule description, the structure of microstrip low-pass filter and its designing principle are empirically analyzed through the simulation...