Performance analysis of switched-and-stay combining (SSC) and selection combining (SC) diversity receivers operating over correlated Nakagami-m fading channels in the presence correlated Nakagami-m distributed co-channel interference (CCI) is presented. Novel infinite series expressions are derived for the output signal to interference ratio's (SIR’s) probability density function (PDF) and cumu...

The problems in Harold Walker’s latest essay, amusingly titled “The Facts of Life”, start with his very first line: Digital Modulation is usually a form of pulse modulation, of which, there are two types-Pulse Width and Pulse position. What about pulse amplitude modulation (PAM), phase shift keying (PSK) and frequency shift keying (FSK), just to mention a few others? All pulses are analyzed by ...

This paper describes a low-cost SDR implementation and performance evaluation of an IEEE 802.15.4 (ZigBee) baseband transceiver realized with a programmable Transport Trigger Architecture (TTA) Application Specific Processor (ASP). The SDR implementation has advantages over current System-on-Chip (SOC) implementations in terms of programmability and flexibility. The transceiver is designed for ...

Broadband application of wireless communication calls for good signal to noise ratio (SNR) and variable high data rates. In the midst of a spate of available techniques, Orthogonal Frequency Division Multiplexing (OFDM) has proven to be effective. OFDM systems have high tolerance towards multipath effects in fading channels. Wireless communication will become tortuous in the presence of Inter S...

In this paper an approach to the performance analysis of a dual-branch switched-and-stay combining (SSC) diversity receiver, operating over interference-limited Ricean correlated fading environment, is presented. Infinite series expressions are obtained for the output signal-to-interference ratio’s (SIR) probability density function (PDF) and cumulative distribution function (CDF). Using these ...

Frequency shift keying (FSK) signal has been widely used in modern radar systems. To intercept the FSK with a high interception probability, reconnaissance receiver should have an ultra-wideband receiving ability. The Nyquist folding (NYFR) is novel non-cooperative and it requires small amount of equipment. When intercepted by NYFR, corresponding output hybrid modulation signal. Therefore, nece...

A performance characteristic of M-ary phase shift keying (MPSK) receivers is the variance of the phase error between the received and recovered signal carriers. For binary phase shift keying (BPSK) and quadrature phase shift keying (QPSK) loops utilizing integrate and dump filters and operating in the linear region, closed-form solutions for this variance exist [1], [2]. In this paper the varia...

Spectral, and energy-efficient, communication is essential for the current future wireless generations. Therefore a novel OFDM with double quadrature signed index shift keying (OFDM-DQSISK) proposed. Double levels of (ISK) system proposed to enhance spectral efficiency modulation (OFDM-IM) system. In DQSISK level one, variable α its jα are exploited differentiate between indices active in-phase...