By Prof François Horlin, André Bourdoux
The will to construct cheaper price analog front-ends has prompted curiosity in a brand new area of study. for this reason the joint layout of the analog front-end and of the electronic baseband algorithms has turn into a massive box of analysis. It permits the instant platforms and chip designers to extra successfully alternate the communique functionality with the construction expense.
electronic reimbursement for Analog Front-Ends offers a scientific method of designing a electronic communique procedure. It covers intimately the electronic reimbursement of many non-idealities, for a large category of rising broadband criteria and with a approach process within the layout of the receiver algorithms. specifically, process techniques for joint estimation of synchronization and front-end non-ideality parameters are emphasised. The booklet is geared up to permit the reader to progressively take in the $64000 info and gigantic volume of fabric in this topic. the 1st bankruptcy is a accomplished advent to the rising instant criteria that is through a close description of the front-end non-idealities in bankruptcy . bankruptcy 3 then makes use of this knowledge to discover what occurs while the themes brought within the first chapters are merged. The ebook concludes with chapters delivering an in-depth insurance of the estimation and repayment algorithms.
This publication is a helpful reference for instant method architects and chip designers in addition to engineers or managers in procedure layout and improvement. it is going to even be of curiosity to researchers in and academia, graduate scholars and instant community operators.
- Presents an international, systematic method of the joint layout of the analog front-end reimbursement, channel estimation, synchronization and of the electronic baseband algorithms
- Describes extensive the most front-end non-idealities equivalent to section noise, IQ imbalance, non-linearity, clipping, quantization, provider frequency offset, sampling clock offset and their impression at the modulation
- Explains how the non-idealities brought by means of the analog front-end components might be compensated digitally
- Methodologies are utilized to the rising instant neighborhood region community and outside mobile conversation structures, for that reason overlaying OFDM(A), SC-FDE and MIMO
- Written by way of authors with in-depth services constructed within the instant study workforce of IMEC and initiatives masking the most broadband instant criteria
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Extra info for Digital Compensation for Analog Front-Ends: A New Approach to Wireless Transceiver Design
Example text
For most non-idealities, a Matlab model is provided in Appendix C. 1 Nonlinear amplifiers This section deals with nonlinearities generated by amplifiers. Although any amplifier can be driven into saturation, the power amplifier in the transmitter is the most frequent source of nonlinearity. For obvious reasons of power consumption, the current in the amplifier is limited as much as possible whereas the output power is desired to be as high as possible. RF characteristics The conventional RF parameters used to describe an amplifier are its power gain, outputreferred 1 dB compression point (OP1), saturated output power (PSAT ) and input-referred third-order intercept point (IIP3).
This usually comes with a tunable local oscillator that DIGITAL COMPENSATION FOR ANALOG FRONT-ENDS 40 translates the desired RF frequency to a fixed IF frequency, where a highly selective filter rejects close-by interfering signals and selects only the desired channel; • direct conversion receivers (also called zero-IF or homodyne receivers) use a LO frequency centred exactly on the channel of interest. Hence, the desired channel is translated directly to baseband where the highly selective filtering can be implemented by means of sharp lowpass filters.
1997) Comparison between adaptive OFDM and single carrier modulation with frequency domain equalization. IEEE Proceedings of Vehicular Technology Conference, pp. 865–869. , Luo, Z. and Wong, K. (2003) Minimum BER block precoders for zero-forcing equalization. Signal Processing 51, 2410–2423. , Benyamin-Seeyar, A. and Eidson, B. (2002) Frequency domain equalization for single-carrier broadband wireless systems. IEEE Communications Magazine 40(4), 58–66. 34 DIGITAL COMPENSATION FOR ANALOG FRONT-ENDS Fazel, K.