A Rel-12 2G/3G/LTE-Advanced 3CC Cellular Receiver

Mikhemar, Mohyee; Kahrizi, Masoud; Leete, J.; Pregardier, B.; Vakilian, Nooshin; Hadji-Abdolhamid, Amir; Vadipour, M.; Ye, Peihua; Chiu, J.; Saeidi, Behzad; Theodoratos, G.; Nariman, Med; Chang, Yuyu; Mohammadi, Behnam; Etemadi, F.; Nourani, B.; Tarighat, A.; Mudge, P.; Zhou, Zhimin; Liu, Ning; Guan, Claire; Juan, K.; Magoon, R.; Rofougaran, M.; Rofougaran, A.

doi:10.1109/jssc.2016.2514438

Cited by 21 publications

(10 citation statements)

References 14 publications

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“…, where we account for the bandlimiting effect of the CSF and the DC removal. In [40]. Obviously, for moderate to high transmit power levels, the harmonic interference can have substantially higher power than the wanted Rx signal.…”

Section: B Power Level Considerations In Practical Tx Harmonics Scenariosmentioning

confidence: 99%

Low-Complex Digital Cancellation of Transmitter Harmonics in LTE-A/5G Transceivers

Paireder

Huemer

2021

IEEE Open J. Commun. Soc.

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Nowadays, mobile communication radio frequency transceivers for LTE-A/5G usually operate in frequency-division duplex mode and support carrier aggregation. The resulting complexity requires compromises in the analog front-end. One consequence is a limited stop-band attenuation of the duplex filters that separate the transmit and the receive paths. The resulting transmit leakage signal combined with other non-idealities, like power amplifier (PA) harmonics, can create self-interference problems that desensitize the receivers. In this work, we propose an optimized digital self-interference cancellation scheme to mitigate the unacceptable performance degradation caused by PA induced harmonics. We derive an appropriate interference model and quantify the interference power levels for a specific PA. Based on these results, our low-complex cancellation approach solely targets the dominating components. Our algorithm relies on the auto-covariance matrix for the second and third power of LTE signals, which we derive for the first time in an analytic form. This statistical information can be combined with the transform-domain concept to noticeably improve the performance of a least-mean squares based cancellation algorithm. The capabilities of the approach are demonstrated by means of simulations and are validated on measurement data.

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Section: B Power Level Considerations In Practical Tx Harmonics Scenariosmentioning

confidence: 99%

Low-Complex Digital Cancellation of Transmitter Harmonics in LTE-A/5G Transceivers

Paireder

Huemer

2021

IEEE Open J. Commun. Soc.

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“…A lower NF is achieved of 3 dB is achieved in [23] by using the passive-mixer following LNTA to provide high in-band impedance (leading to in-band voltage gain) while providing out-of-band filtering. In a recent implementation [24], the authors present a wideband receiver architecture that supports carrier aggregation (both intra and inter-band) for both 3 G and LTE standards. The architecture uses 16 parallel RF ports driving current mode front-ends with passive mixers, achieving overall +1 dBm (OOB IIP 3 ) linearity.…”

Section: Wideband Interferer-tolerant Receivers With Current-mode Architecturesmentioning

confidence: 99%

“…This stringent requirement is typically met with SAW filters which provide high-Q band-specific filtering. In a multi-band use case, multiple SAW filters are required with each SAW filter preceded by a single-pole multi-throw switch to cater to multi-band use case [24]. This succession of switches and filters leads to ∼3 dB insertion loss up the receiver chain [14].…”

Section: Reconfigurable Shunt Notch Filters For Interferer-rejectionmentioning

confidence: 99%

“…While the implementations haven't focused on specific standards, the OOB IIP 3 is typically a key focus in these works. While there are several outstanding challenges that remain to be addressed, comparing the OOB-IIP 3 numbers of the N-path/mixer-first implementations with a representative reference ( [24]) shows that most of these works exhibit OOB-IIP 3 >20 dBm with even higher linearity using bottom-plate switching techniques. Mixer-first mm-Wave reconfigurable receivers are still a nascent area of research and linearities are not as high as RF implementations (Fig.…”

Section: Reconfigurable Receivers At Rf and Mm-wavementioning

confidence: 99%

“…Linearity of mixer-first and N-path RX wideband reconfigurable receivers' (shown through OOB IIP 3 ) across frequency. Representative 3 G/LTE focused implementation is shown in[24], with N-path mixer-first RX demonstrating substantially higher linearity, promising a path towards linear reconfigurable RX. The plot also shows LO power trends (mW/GHz) based on recent works, demonstrating the challenges of high-frequency N-path RX.…”

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confidence: 99%

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Recent Developments in Integrated Interferer-Tolerant Receivers for Reconfigurable Radios

et al. 2021

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Fragmented spectrum allocations at RF and mm-Wave, increased use of carrier aggregation/MIMO and dense spectrum-reuse in wireless links has led to interest in the design of integrated wideband, high-linearity MIMO RX that provide low noise, blocker tolerance and reconfigurability across signal domains. In this paper, receive architectures for wide operating range and blocker tolerance are presented with a focus on recent developments in reconfigurable N-path receivers. Generalized sequence-mixing architectures that support reconfigurable frequency/spatial/code-domain rejection and filtering are described along with directions of research extending operation to wider bandwidths and higher frequencies.INDEX TERMS N-path filters, reconfigurable receivers, current-mode, passive mixers, sequence mixers, spatio spectral filtering, walsh function sequence based notch filters, blocker tolerant receivers, blocker tolerant MIMO, interference tolerant receivers.This article has been accepted for inclusion in a future issue of this journal. Content is final as presented, with the exception of pagination.

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Power constrained SiGe/SOI sub 6GHz LNA design analysis and comparison

Wolf

Boenke

et al. 2016

2016 13th IEEE International Conference on Solid-State and Integrated Circuit Technology (ICSICT)

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A Rel-12 2G/3G/LTE-Advanced 3CC Cellular Receiver

Cited by 21 publications

References 14 publications

Low-Complex Digital Cancellation of Transmitter Harmonics in LTE-A/5G Transceivers

Low-Complex Digital Cancellation of Transmitter Harmonics in LTE-A/5G Transceivers

Recent Developments in Integrated Interferer-Tolerant Receivers for Reconfigurable Radios

Power constrained SiGe/SOI sub 6GHz LNA design analysis and comparison

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