The techniques used in GSM networks for mobile station localization typically use several methods with different level of granularity, based on the base network parameters such as Cell Identification, Timing Advance, the position of Base Transceiver Station, the parameters of Base Transceiver Station antenna etc. This article introduces several others parameters that can be used for network des...

This document provides an overview of the Smart RF ATA82xx receiver, ATA8520 transmitter and ATA85xx transceiver device families. All devices have the same architecture with the transceiver family featuring both send and receive, receivers only receive, and transmitters only transmit. The available documentation, tools and software and their purpose are described together with the evaluation ki...

This paper presents a low-cost MIMO channel sounding technique with a fully parallel transceiver architecture that employs a simple time division multiplexing scheme. It aims at both of directional channel measurement using MIMO antennas and MIMO channel measurements for transmission performance evaluation. This paper describes the principle of the channel sounding technique and discusses the s...

Beamforming with adaptive antenna arrays is the most promising means for increasing data rates of wireless systems, since it enables channel reuse by several users in a cell through space division multiple access (SDMA). In SDMA, multiple beams are formed towards different users, each beam by a dedicated transceiver. However, the use of adaptive antenna arrays at the physical layer mandates sig...

We describe the design and development of a high-speed 8-channel hybrid integrated optical transceiver package with Clock and Data Recovery (CDR) circuits. The package concept has been developed to be compatible with microprocessor package technology and at the same time allow the integration of low cost, high-performance optical components. A 90nm CMOS optical transceiver chip, 850nm 10Gb/s Ga...

This practical resource offers a thorough examination of RF transceiver design for MIMO communications. Offering a practical view on MIMO wireless systems, this book extends fundamental concepts on classic wireless transceiver design techniques to MIMO transceivers. This helps reader gain a very comprehensive understanding of the subject. This in-depth volume describes many theoretical and impl...

Where, C is the channel capacity, BW is the bandwidth, SNR is the ratio of average received signal power to the noise spectral density. It can be seen from (1), channel capacity increases linearly with bandwidth but only logarithmically with SNR which means capacity increases as a function of BW faster than as a function of SNR and with a wide bandwidth, high data rate can be achieved with a lo...

Consider randomly scattered radio transceivers in Rd, each of which can transmit signals to all transceivers in a given randomly chosen region about itself. If a signal is retransmitted by every transceiver that receives it, under what circumstances will a signal propagate to a large distance from its starting point? Put more formally, place points {xi} in Rd according to a Poisson process with...

A dual-rate 4.7/6.5 kbits/s algebraic code excited linear predictive (ACELP) codec is proposed for adapt ive speech communicators, which can d r o p their source ra te a n d speech quali ty under network control i n order t o invoke a more e r ro r resilient modem amongst less favourable channel conditions. Sourcematched Bose-Chaudhuri-Hocquenghem (BCH) codecs combined with un-equal ,protection...

Personal Communications Services (PCS) require low-power radio technologies. One such transceiver architecture employing frequency-hopped spread-spectrum techniques is presented. System features such as antenna diversity with equal-gain combining and sequential hop combining are incorporated into the transceiver design to achieve robust wireless digital data transmission over fading channels. A...