In CDMA (Code - Division Multiple - Access) systems multi - user accessing of a channel is possible. Under the assumptions of Optimum multi - user and decorrelating detector in CDMA systems. By using signals with zero and / or identical cross correlations, a simple and expandable decorrelating detector with optimum efficiency which can be easily implemented are proposed. Constructing these sign...

Chaos based communications have drawn increasing attention over the past years. Chaotic signals are derived from non-linear dynamic systems. They are aperiodic, broadband and deterministic signals that appear random in the time domain. Because of these properties, chaotic signals have been proposed to generate spreading sequences for wide-band secure communication recently. Like conventional DS...

For the first time, to best of our knowledge, hybrid triple coding empowered frequency division multiple access (FDMA)-code (CDMA) mode coded optical sensor (CAOS) camera is demonstrated. Compared independent FDMA and CDMA modes, FDMA-CDMA has a novel high-security space-time-frequency signal encoding design for robust, faster, linear irradiance extraction at moderately high dynamic range (HDR)...

Abstract Alltop functions have applications to code-division multiple access (CDMA) systems and mutually unbiased bases (MUBs). construct MUBs CDMA signal sets, this motivates the continued search for further functions. The discovery of is hindered by computational complexity verification. This paper narrows space through introduction a characteristic cubic polynomial provides verification proc...

The spectrum used by Code Division Multiple Access (CDMA) allows for a signal with greater bandwidth spreading electromagnetic energy. Multi-Carrier CDMA (MC-CDMA) is telecommunications numerousentrée strategy that spreads each user symbol across the frequency domain distinct codes. Cognitive Radio (CR) vibrant admittance enabling technology dynamically allocating space fundamental users modify...