Receiver Design With an Adjustable Energy-Signal-Quality Tradeoff for IoT Networks

The energy efficiency of an Internet of Things (IoT) receiver can be improved by introducing an adjustable tradeoff between signal quality and energy consumption. In good channel conditions, the receiver can be set to consume less energy per bit, without compromising signal quality in bad channel conditions. We propose a system-level receiver...

Understanding the impact of circuit-level inaccuracy on sensor network performance

Energy efficiency is of paramount importance in designing low-power wireless sensor nodes. Approximate computing is a new circuit-level technique for reducing power consumption. However, the gain in power by applying this technique is achieved at the cost of computational errors. The impact of such inaccuracies in the circuit level of a radio...

Mutual-Coupling Based Phased-Array Calibration: A Robust and Versatile Approach

The transmit and receive modules of a large phased array are often calibrated for amplitude and phase variations by an internal calibration network and an offline characterization of the complete array in an anechoic chamber. Such a solution is less obvious in view of current trends towards integration and modularity. An alternative to surpass...

Initial code exchange for asynchronous TR-UWB ad hoc networks

In this paper we present an initial code exchange scheme for a transmit-reference ultra wide-band (TR-UWB) system. We exploit the facts that a TR-UWB transceiver scheme allows for simultaneous transmission and reception as well as detection and separation of distinct users with the same code even if their data packets overlap. We exploit the...

Low-cost millimeter-wave transceiver module using SMD packaged MMICs

This paper presents a novel approach to realize low-cost millimeter-wave modules using only SMD packaged MMICs integrated on a single organic substrate. This approach is demonstrated on a 38 GHz transceiver module for point-to-point LMDS communication systems. The required SMD package technology and demonstrator have been developed in the 5th...

Fully-integrated core chip for X-band phased-array T/R modules

This paper discusses the final result of development effort leading to a fully-integrated phased-array core chip. The MMIC is especially useful for active electronically-steered arrays, and integrates a full functionality including low-noise amplifier (LNA), a medium-power amplifier (MPA) matched to common high-power amplifiers (HPA) and all...