Download RF Analog Impairments Modeling for Communication Systems by Lydi Smaini PDF

By Lydi Smaini

With the becoming complexity of non-public cellular communique platforms not easy greater data-rates and excessive degrees of integration utilizing reasonably cheap CMOS expertise, total approach functionality has develop into extra delicate to RF analog front-end impairments. Designing built-in transceivers calls for an intensive knowing of the complete transceiver chain together with RF analog front-end and electronic baseband. verbal exchange procedure engineers need to comprise RF analog imperfections of their simulation benches for you to examine and quantify their impression at the process performance.

Here the writer explores key RF analog impairments in a transceiver and demonstrates how you can version their impression from a communique procedure layout view-point. He discusses the layout points of front finish of transceivers (both receivers and transmitters) and offers the reader with how to optimize a fancy mixed-signal platform by way of bearing in mind the features of the RF/analog front-end.

Key positive aspects of this ebook include:

  • Practical examples illustrated via approach simulation effects in line with WiFi and cellular WiMAX OFDM transceivers
  • An review of the electronic estimation and repayment of the RF analog impairments similar to energy amplifier distortion, quadrature imbalance, and provider and sampling frequency offsets
  • An exposition of the demanding situations desirous about the layout of either RF analog circuits and DSP verbal exchange circuits in deep submicron CMOS technology
  • MATLAB codes for RF analog impairments versions  hosted at the significant other website

Uniquely the ebook bridges the distance among RFIC layout specification wishes and conversation structures simulation, delivering readers RF analog impairments modeling wisdom and a entire method of unifying concept and perform in procedure modelling. it really is of serious price to communique platforms and DSP engineers and graduate scholars who layout conversation processing engines, RF/analog structures and IC layout engineers all in favour of the layout of verbal exchange platforms.

Chapter 1 creation to communique System?On?Chip, RF Analog Front?End, OFDM Modulation, and function Metrics (pages 1–35):
Chapter 2 RF Analog Impairments Description and Modeling (pages 37–105):
Chapter three Simulation of the RF Analog Impairments influence on actual OFDM?Based Transceiver functionality (pages 107–165):
Chapter four electronic repayment of RF Analog Impairments (pages 167–198):

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Extra resources for RF Analog Impairments Modeling for Communication Systems Simulation: Application to OFDM-Based Transceivers

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34 RF Analog Impairments Modeling for Communication Systems Simulation We will see in the next chapter that the RF impairments are also translated to equivalent models at complex baseband. A. (1995) Direct-conversion radio transceivers for digital communications. IEEE Journal on Solid-State Circuits, 30, 1399–1410. Abidi, A. (2000) Wireless transceivers in CMOS IC technology: the new wave, Proceedings of the Symposium on VLSI Technology, pp. 151–158. Armstrong, J. (2007) OFDM, John Wiley & Sons, Inc.

This technique is only achievable if the receiver is able to send the channel properties to the transmitter such that the transmission can be optimized or adapted to the link quality. 8 OFDMA for Multiple Access Whereas in classical OFDM transceivers all the subcarriers of the OFDM symbols are allocated to one user per OFDM symbol, orthogonal frequency division multiple access (OFDMA) divides the subcarriers into sub-channels (Yang, 2010). 25). Consequently, in OFDMA all the users receive information about the position of their sub-channel within the OFDM symbol.

The error signal, output of the PFD, is low-pass filtered for controlling the VCO in order to track the instantaneous phase of reference oscillator. 14 Simple PLL scheme used in RF communication systems RF Analog Impairments Description and Modeling 47 • T0 = 1/F0 is the mean period; • ωn is the natural pulsation (related to the PLL bandwidth); • ξ is the damping coefficient. 15 that the PLL in-band phase noise is especially dominated by the reference oscillator, the PFD and the feedback divider, while the PLL out-of-band noise is mainly a function of the VCO.

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