This paper presents a wireless sensor network for smart electronic shirts. This allows the monitoring of individual biomedical data, such the cardio-respiratory function. The solution chosen to transmit the body’s measured signals for further processing was the use of a wireless link, working at the 2.4 GHz ISM band. A radio-frequency transceiver chip was designed in a UMC RF 0.18 μm CMOS proce...

The authors investigate linear transceiver design in uplink (UL) coordinated multipoint transmission and reception (CoMP) multiple-input multiple-output (MIMO) systems with joint detections. A two-stage design algorithm is proposed by exploiting the technique of interference alignment, optimising the structure of the effective channel and employing power loading, with the goal to achieve high t...

Cognitive radios in wireless networks is the efficient way of sensing and accessing the spectrum dynamically. In this paper we analyze the outage probability and capacity of hybrid network model in cognitive radios considering transceiver impairments. Every physical device has hardware impairments which degrades the performance of the system. Majority of technical contributions in wireless comm...

The long links that interconnect networking and computing systems and boards need high throughput to avoid expensive, massively parallel connections. However, long wires suffer signal losses that increase with frequency. Digital communication techniques can compensate for these losses, but require Analog-to-Digital and Digital-to-Analog converters (ADCs and DACs). To understand the application ...

In the world of cellular telephony there is a hierarchy of controlling devices. Cellular telephones communicate with Base Transceiver Stations (BTS) or transceivers, which in turn are assigned to Base Station Controllers (BSC) or controllers. All controllers are connected to a Mobile Switching Centers (MSC). As a user of a cellular telephone moves around, the call must be transfered from transc...

This document describes the advantages of modern switching voltage regulators in a power distribution network (PDN) design to achieve the best FPGA transceiver performance. This white paper provides guidance on voltage regulator selection for low-noise applications, and a test case that demonstrates the transceiver performance for different types of voltage regulators and voltage rail configura...

A dynamic sampling and digital I/Q-mismatch calibration (IQM) in a MB-OFDM UWB baseband transceiver are proposed to reduce ADC power and analog IQM-calibration power. Measured transceiver power consumes 31.2mW, saving at least 43% ADC power and tolerating 10x IQM (2dB gain and 20 degree phase errors) of existing designs to reduce the power and design efforts from analog calibration circuits.

An effective heat dissipation of uncooled 400-Gbps (16×25-Gbps) form-factor pluggable (CDFP) optical transceiver module employing chip-on-board multimode 25-Gbps vertical-surface-emitting-laser (VCSEL) and 25-Gbps photodiode (PD) arrays mounted on a brass metal core embedded within a printed circuit board (PCB) is proposed and demonstrated. This new scheme of the hollow PCB filling with thermal...

A digital system is proposed for low power 100channel neural recording system in this paper, which consists of 100 amplifiers, 100 analog-to-digital converters (ADC), digital controller and baseband, transceiver for data link and RF command link. The proposed system is designed in a 0.18 μm CMOS process and 65 nm CMOS process. Keywords—multiplex, neural recording, synchronization, transceiver

To achieve high bandwidth in the high-speed communication network is available for fiber-optical networks. Wavelength Division Multiplexing (WDM) increases the usage of bandwidth by partitioning the bandwidth into many, more manageable high-speed channels. Many scheduling algorithms are proposed to bring out channel reusing in a limited bandwidth to increase system performance. Unfortunately, f...