Reconfigurable Signal Processing and DSP Hardware Generator for 5G Transmitters

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Journal Title
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Conference article in proceedings
Date
2022-10-26
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Language
en
Pages
7
1-7
Series
2022 IEEE Nordic Circuits and Systems Conference, NORCAS 2022 - Proceedings
Abstract
To impose the reconfigurability and reusability of digital circuits for millimeterwave transmitter architectures, high-speed digital signal processing architectures are explored. The digital front-end of these next-generation transmitters can be implemented up to the maximum operating frequency to meet the requirements of the 5G NR FR2 frequency bands. This paper presents an efficient implementation of a reconfigurable digital signal processor (DSP) that contains programmable multistage multirate filters, operable up to 4 GHz, and a flexible generator for polar, outphasing, and multilevel outphasing modulation. The system achieves an excellent ACLR of 42 dB and EVM degradation of 1.61% with a 7-bit phase signal at a sampling frequency of 4 GHz for outphasing modulation. Digital synthesis of the circuit in a 22 nm FDSOI process results in a core area of 0.12 mm2and an estimated power consumption of 142 mW for a 200 MHz bandwidth 5G NR baseband signal.
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Keywords
digital signal processing (DSP), 5G, Reconfigurable hardware, Digital Front-end, System on Chip, Outphasing, Transmitter
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Citation
Ghosh , A , Spelman , A , Cheung , T H , Boopathy , D , Unnikrishnan , V , Lampu , V , Xu , G , Anttila , L , Stadius , K , Kosunen , M & Ryynänen , J 2022 , Reconfigurable Signal Processing and DSP Hardware Generator for 5G Transmitters . in J Nurmi , D T Wisland , S Aunet & K Kjelgaard (eds) , 2022 IEEE Nordic Circuits and Systems Conference, NORCAS 2022 - Proceedings . , 9934696 , IEEE , pp. 1-7 , IEEE Nordic Circuits and Systems Conference , Oslo , Norway , 25/10/2022 . https://doi.org/10.1109/NorCAS57515.2022.9934696