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Project: Nonlinear (NL) OFDM Receiver Designs

Acronym: NORD
Main Objective:
With the development of 5G mobile and evaluation, 6G mobile starts in the research phase. One key requirement for 6G mobile is higher data rate and higher reliability, compared to previous mobile networks. To achieve this, this project seeks to find innovative Nonlinear (NL) OFDM Receiver Designs (NORD) are desired to cope with NL distortions arisen in the transceiver chains, with advanced baseband processing algorithms at receiver (UE) side. The aim is to support super- QAM (1024-QAM and 4096-QAM) modulation, under the same radio-frequency (RF) requirements applicable for e.g. 256-QAM, i.e., same phase noise and linearity requirements. The NORD designs can also be used to reduce the bit-width in receiving algorithms caused by operations such as clipping and saturation such as in Analog-Digital-Converter (ADC). Unlike conventional OFDM receivers that treat NL distortions as interference to suppress or cancel, with NORD the NL distortions are considered as useful information and exploited to enhance detection. The main benefits of our schemes, to be delivered, include:
(1) support super-QAM, which can lead to improvements in several important key performance indexes (KPI) of wireless communications such as coverage, achievable bit rates, energy savings and/or capacity, depending on the specific context or KPI that needs to be optimized;
(2) less bit-widths in receiving algorithms, which can reduce the memory size, modem chipset cost, and power consumption;
(3) better throughput.
Reference: Huawei NORD Project 9438956
Funding: Huawei Technologies Sweden
Approval Date: 09-03-2022
Start Date: 09-04-2022
End Date: 09-04-2024
Team: Rui Miguel Henriques Dias Morgado Dinis
Groups: Radio Systems – Lx
Partners: Huawei
Local Coordinator: Rui Miguel Henriques Dias Morgado Dinis
Associated Publications