A Novel Transceiver Architecture Based on Wavelet Packet Modulation for UWB-IR WSN Applications

Abstract

In last few years, several recent developments concern a new proposed techniques of communication for WSN (Wireless Sensors Network) using a complex methods and technics. This network is considered a future platform for many applications like: medical, agriculture, industrial, monitoring and others. The challenge of this work consists in proposing a new design of transceiver for WSN based on IDWPT (Inverse Discrete Wavelet Packet Transform) in emitter and DWPT (Discrete Wavelet Packet Transform) in receiver for mono and multi users using AWGN Channel. We will propose in this paper, a new concept of impulse radio communication for multiband orthogonal communication for UWB (Ultra-wideband) applications. The main objective of this work is to present a new form of pulse communication adapted to low throughput short-range applications and is scalable according to the type of use but also the number of sensors.

Design and Performance Evaluation of Lattice Daubechies Wavelet Filter Banks for Less Complex Cognitive Transceivers

“…Thisprocess is demonstrated clearly in wavelet packet analysis and is well explained in Fig.2 (b) in Ref. [15].…”

“…In WPMCM transceiver system all modulation signals can be comprised of a sum of modulated wavelet packet coefficients weighted with complex data , known as multicarrier symbols. The signal S[n] can be expressed as follows [15]:…”

“…This reconstruction is called wavelet packet synthesis which illustrated in Fig. 2(a) [15]. The whole framework of the WPMCM transceiver system is described in Fig.…”

Discrete Wavelet Packet Transform-Based Industrial Digital Wireless Communication Systems

“…The system model is based on IDWPT/DWPT multi-user architecture for 4 and 16 sensors, over an industrial environment. All emitters are based on IDPWT implemented as a synthesis of filter banks, and receivers are based on DWPT, implemented as analysis filter banks [4,17]. Industrial channel is described as a Rician fading channel, in the case of LOS configuration and Rayleigh fading channel for NLOS, at a 2.4 GHz frequency, affected by an impulsive noise.…”

“…These binary data might differ from one input to another and is modulated by pulse modulations. A study on the different types of binary or pulse modulations is presented in [4], which makes it possible to make an appropriate choice of the type of pulse to be used, for a multi-resolution architecture.…”