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News featuring the Snapdragon X75 5G modem was reported by Qualcomm Technologies on 9 August 2023, announcing that it set a new world record on the sub-6-GHz spectrum, achieving a 7.5 Gb/s downlink speed. Conducted through device testing using a 5G SA network configuration, this speed was reached by leveraging a total of 300 MHz of spectrum, using 4× CA with four TDD channels in one downlink connection, and 1024 quadrature amplitude modulation (QAM).
The aggregation of four TDD channels enables operators to combine their diverse spectrum assets to achieve higher data rates. In addition, 1024 QAM improves spectral efficiency by incorporating more data into each transmission, in comparison with 256 QAM, ultimately allowing for increased data throughput and improved spectrum efficiency.
Full Article: IEEE Vehicular Technology Magazine, Volume 18, Number 4, December 2023 |
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