Advanced Approach for TX Impairments Compensation Based on Signal Statistical Analysis at the RX Side

Ermolaev, Gregory; Bolkhovskaya, Olesya; Maltsev, Alexander

doi:10.1109/weconf51603.2021.9470687

Cited by 4 publications

(3 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It should be noted that the number of such devices can be very large, since cheap devices are a substantial part of Internet-of-Things (IoT) infrastructure. Therefore, this problem was addressed in a number of works [5][6][7][8][9][10][11], even for the lower bands.…”

Section: Problem and Previous Solutionsmentioning

confidence: 99%

“…Another way is the compensation of PA nonlinearity at the receiver. In paper [8], statistical processing of the received signals for the evaluation of the average PA distortion for further compensation was proposed. Works [5, 6, 9-11, 17, 18] considered a theoretical approach for PA nonlinearity compensation at the receiver side from a general point of view.…”

Section: Problem and Previous Solutionsmentioning

confidence: 99%

“…In several works, like [10,11,17], the decision-directed feedback is used for estimation of the power amplifier characteristics. Similarly, in [8] statistical processing is applied to adjust the demodulation algorithm to the received distorted signal. However, it is more effective to know the TX PA nonlinearity function and the working point for applying more precise inverse processing.…”

Section: Proposed Rx-side Compensation Approachmentioning

confidence: 99%

See 2 more Smart Citations

A Method for Power Amplifier Distortions Compensation at the RX Side for the 5G NR Communication Systems

Maltsev

Shikov²,

Pudeev³

et al. 2022

Frontiers in Artificial Intelligence and Applications

View full text Add to dashboard Cite

For the past years, the Internet of Things (IoT) supported by 5G technology, has been expanding rapidly across a wide range of services, enabling inter-object connectivity for the automotive industry, consumer electronics, transportation, logistics sectors, and manufacturing. With the increasing ubiquitous usage of various small-sized sensors, manufacturing cost of each element taken remains a critical aspect. Relatively low price of individual elements is the key for enabling tightly connected environment, but may severely affect RF chains quality as well as overall performance. With 5G expansion to the sub-THz bands, power amplifier nonlinearity may significantly limit system performance even in high- grade devices, due to power amplifier design limitations. Multiple studies were done to mitigate nonlinearity impact, both at the transmitter (TX) and receiver (RX) sides. Many solutions propose for evaluation and further compensation of the PA nonlinearity effects, via decision-directed feedback, training or even statistical processing of the received signal. However, with knowledge of the PA nonlinearity function at the receiver side, the processing may be simplified by the application of the reverse function to the equivalent signal in the time domain. In this paper we propose a method for PA nonlinear distortion compensation at the RX side, which can be adjusted for several signal waveforms adopted in 5G NR (New Radio) standard, such as CP-OFDM, DFT-S-OFDM, and others. The simulation results presented demonstrate performance improvement both for the sub-THz PA models and models for the 30–70 GHz band.

show abstract

Section: Problem and Previous Solutionsmentioning

confidence: 99%

Section: Problem and Previous Solutionsmentioning

confidence: 99%

Section: Proposed Rx-side Compensation Approachmentioning

confidence: 99%

See 1 more Smart Citation

A Method for Power Amplifier Distortions Compensation at the RX Side for the 5G NR Communication Systems

Maltsev

Shikov²,

Pudeev³

et al. 2022

Frontiers in Artificial Intelligence and Applications

View full text Add to dashboard Cite

show abstract

A Novel Calibration Method of DC-Offsets in Direct-Conversion Transmitter

et al. 2022

View full text Add to dashboard Cite

Prototype of High-Speed Data Transmission Receiving and Transmitting Equipment in the 57‒64 GHz Frequency Range

Bolkhovskaya

Ermolaev

Trushkov

et al. 2023

jour

View full text Add to dashboard Cite

The purpose of this work is to create and study the characteristics of a prototype of receiving and transmitting equipment operating in the millimeter wavelength range in high-speed data transmission networks. During the work, the task of developing and software implementation of digital signal processing algorithms was solved, the hardware part was developed and implemented, experimental measurements of characteristics and field tests of the prototype were carried out. Experimental studies have shown that the developed equipment transmits and receives signals in the frequency range 57‒64 GHz with the possibility of discrete change of the signal frequency bandwidth: 100, 200, 400, 800 MHz and supports 12 modulation and coding schemes with low-density parity check code. The use of an adaptive algorithm for demodulation and decoding at the receiver made it possible to increase the efficiency of signal transmission and reduce the probability of packet errors by half. The developed prototype provides a data transmission rate of 2 Gbit/s at distances up to 100 m and of 500 Mbit/s at distances up to 300 m.

show abstract

Advanced Approach for TX Impairments Compensation Based on Signal Statistical Analysis at the RX Side

Cited by 4 publications

References 10 publications

A Method for Power Amplifier Distortions Compensation at the RX Side for the 5G NR Communication Systems

A Method for Power Amplifier Distortions Compensation at the RX Side for the 5G NR Communication Systems

A Novel Calibration Method of DC-Offsets in Direct-Conversion Transmitter

Prototype of High-Speed Data Transmission Receiving and Transmitting Equipment in the 57‒64 GHz Frequency Range

Contact Info

Product

Resources

About