Wireless sensor networks typically require low cost devices and low power applications. Hence, such networks usually employ radios with only simple modulation techniques such as ASK, OOK and FSK [9]. We present in this paper, a two energy efficient communication schemes for wireless sensor networks which are a redundant radix based number (RBN) representation i.e. RBNSiZeComm (Redundant Binary ...

GMPLS (generalized multiprotocol label switching) for supporting IP over WDM networks provides quick and efficient forwarding of IP packets because it uses label swapping as a single forwarding algorithm, thus yielding low latency and enabling scaling to terabit rates. Combined ASK/FSK or ASK/DPSK modulation format for payload/label is proposed for labeling IP over WDM networks supported by GMP...

This paper presents two low-power sensor read-out circuit schemes for implantable biosensor applications. The proposed work presents the design of ASK and FSK schemes in bulk CMOS technology. Either scheme consists of a data generator block and modulator block. The first version of the circuit is designed in a 0.35μm CMOS process and it can generate an amplitude-shift-keying (ASK) signal while ...

T Few dense underwater acoustic sensor networks (UWSN) currently exist because existing commercial acoustic modems are too expensive and power consuming. In order to enable the proliferation of UWSN, a new low-cost, low-power acoustic modem must be designed. This paper investigates the appropriate computational platform and presents the design of a complete FPGA implementation of a Frequency Sh...

Time-frequency distributions (TFDs) are powerful tools to represent the energy content of time-varying signal in both time and frequency domains simultaneously but they suffer from interference due to cross-terms. Various methods have been described to remove these cross-terms and they are typically signal-dependent. Thus, there is no single TFD with a fixed window or kernel that can produce ac...

In compressive sensing (CS) theory, as the number of samples is decreased below a minimum threshold, the average error of the recovery increases. Sufficient sampling is either required for quality reconstruction or the error is resignedly accepted. However, most CS work has not taken advantage of the inherent structure in a variety of signals relevant to engineering applications. Hence, this pa...

The frequency chirp properties of both SOA-Mach-Zehnder interferometer and nonlinear polarization rotation wavelength converters are studied and their feasibility for supporting combined frequency shift keying/ intensity modulation (FSK/IM) labeling scheme are experimentally assessed. Introduction Labelled optical burst switching (LOBS) is considered a promising technique for efficient IP over ...

In this paper a detailed explanation of our newly proposed frequency hopped spread spectrum system named “MMFSK-EOD System Using Binary Hopping Pattern” (8) is presented. First, to make clear the concept of FH/M-ary Multilevel FSK modulation (abb. FH/ MMFSK or MMFSK), the waveform and the spectrum differences between MFSK and FH/MFSK or FH/MMFSK are reviewed. Next, to understand the error propa...

This paper presents a system for simultaneous wireless power and data transfer (SWPDT) over single inductive link. We design the frequency-splitting link to address trade-off between high efficiency (PTE) rate (DR). An active rectifier is designed conversion efficiency. Forward communication based on frequency-shift keying (FSK) modulation support DR transmission while delivering uninterrupted ...