Transceiver architecture selection: Review, state-of-the-art survey and case study

Mak, Pui-In; Seng-Pan, U; Martins, Rui P.

doi:10.1109/mcas.2007.4299439

Cited by 135 publications

(67 citation statements)

References 70 publications

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“…The transmitter front-end considered uses directconversion architecture [16]. This architecture presents several advantages when compared with the conventional super-heterodyne structure: small number of parts, low-mixing product spurs, few filters, and low current consumption [17].…”

Section: System Modelmentioning

confidence: 99%

Power amplifier linearization technique with IQ imbalance and crosstalk compensation for broadband MIMO-OFDM transmitters

Gregorio

Cousseau

Werner

et al. 2011

EURASIP J. Adv. Signal Process.

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The design of predistortion techniques for broadband multiple input multiple output-OFDM (MIMO-OFDM) systems raises several implementation challenges. First, the large bandwidth of the OFDM signal requires the introduction of memory effects in the PD model. In addition, it is usual to consider an imbalanced in-phase and quadrature (IQ) modulator to translate the predistorted baseband signal to RF. Furthermore, the coupling effects, which occur when the MIMO paths are implemented in the same reduced size chipset, cannot be avoided in MIMO transceivers structures. This study proposes a MIMO-PD system that linearizes the power amplifier response and compensates nonlinear crosstalk and IQ imbalance effects for each branch of the multiantenna system. Efficient recursive algorithms are presented to estimate the complete MIMO-PD coefficients. The algorithms avoid the high computational complexity in previous solutions based on least squares estimation. The performance of the proposed MIMO-PD structure is validated by simulations using a two-transmitter antenna MIMO system. Error vector magnitude and adjacent channel power ratio are evaluated showing significant improvement compared with conventional MIMO-PD systems.

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Section: System Modelmentioning

confidence: 99%

Power amplifier linearization technique with IQ imbalance and crosstalk compensation for broadband MIMO-OFDM transmitters

Gregorio

Cousseau

Werner

et al. 2011

EURASIP J. Adv. Signal Process.

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“…Solve the modulator coefficients M (2) and N (2) using (51)-(52); A (2) , B (2) and C (2) using (54)-(56); and R (2) and S (2) using (58) common,2 = 0 12. Solve the modulator coefficients M (3) and N (3) using (51)-(52); A (3) , B (3) and C (3) using (54)-(56); and R (3) and S (3) using (58)-(59). http://jwcn.eurasipjournals.com/content/2011/1/130 reception scheme, assuming the sampling frequency f S =  MHz.…”

Section: Transfer Function Design For the First-stage (Two-band Ntf Amentioning

confidence: 99%

Multistage Quadrature Sigma-Delta Modulators for Reconfigurable Multi-Band Analog-Digital Interface in Cognitive Radio Devices

Marttila

Allén

Valkama

2011

J Wireless Com Network

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This article addresses the design, analysis, and parameterization of reconfigurable multi-band noise and signal transfer functions (NTF and STF), realized with multistage quadrature modulator (Q M) concept and complex-valued in-phase/quadrature (I/Q) signal processing. Such multi-band scheme was already proposed earlier by the authors at a preliminary level, and is here developed further toward flexible and reconfigurable A/D interface for cognitive radio (CR) receivers enabling efficient parallel reception of multiple noncontiguous frequency slices. Owing to straightforward parameterization, the NTF and the STF of the multistage Q M can be adapted to input signal conditions based on spectrum-sensing information. It is also shown in the article through closed-form response analysis that the so-called mirror-frequency-rejecting STF design can offer additional operating robustness in challenging scenarios, such as the presence of strong mirror-frequency blocking signals under I/Q imbalance, which is an unavoidable practical problem with quadrature circuits. The mirror-frequency interference stemming from these blockers is analyzed with a novel analytic closed-form I/Q imbalance model for multistage Q Ms with arbitrary number of stages. Concrete examples are given with three-stage Q M, which gives valuable degrees of freedom for the transfer function design. High-order frequency asymmetric multi-band noise shaping is, in general, a valuable asset in CR context offering flexible and frequency agile adaptation capability to differing waveforms to be received and detected. As demonstrated by this article, multistage Q Ms can indeed offer these properties together with robust operation without risking stability of the modulator.

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“…Among various architectures, the superheterodyne receiver is the most traditional and the most superior one [1][2][3][4][5]. Figure 1 shows the typical architecture of a superheterodyne receiver front-end, where an off-chip image-rejection filter is employed to deeply suppress the image signals located at twice the intermediate frequency (IF) away from the desired signal, before down-conversion.…”

Section: Introductionmentioning

confidence: 99%

A superheterodyne receiver front-end with on-chip automatically Q-tuned notch filters

Chi

Wang

Wong

2011

Analog Integr Circ Sig Process

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A superheterodyne receiver front-end with onchip automatically Q-tuned notch filters is proposed. The front-end includes a differential LNA and a Gilbert downconverter, where each block is coupled with an on-chip image-rejection notch filter to get high image-rejection ratio. Each notch filter is formed by one on-chip LC network and one negative-resistance cross-coupled pair to compensate for the loss of the LC network. The current through the cross-coupled pairs is automatically adjusted by an automatic Q tuning circuit so that the loss of the notch filter is perfectly compensated to achieve a deepest notch. The automatic Q tuning circuit is an analog-digital mixed signal circuit, and successive approximation register algorithm is used to search for the optimum current value. The superheterodyne receiver front-end has been implemented in 0.18 lm CMOS. Experimental results show that the circuit could achieve an image rejection ratio of 75 dB with 105 MHz IF Frequency. The LNA draws 5.86 mA current, and the down-converter draws 1.27 mA current while two image-rejection filters and the master VCO totally draw 363 lA current, all from a 1.8 V power supply.

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Transceiver architecture selection: Review, state-of-the-art survey and case study

Cited by 135 publications

References 70 publications

Power amplifier linearization technique with IQ imbalance and crosstalk compensation for broadband MIMO-OFDM transmitters

Power amplifier linearization technique with IQ imbalance and crosstalk compensation for broadband MIMO-OFDM transmitters

Multistage Quadrature Sigma-Delta Modulators for Reconfigurable Multi-Band Analog-Digital Interface in Cognitive Radio Devices

A superheterodyne receiver front-end with on-chip automatically Q-tuned notch filters

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