Understanding LTE and 5G New Radio Coexistence Through Dynamic Spectrum Sharing with 89600 VSA Software
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This video provides an in-depth discussion on dynamic spectrum sharing (DSS), a key technology enabling the coexistence of LTE and 5G New Radio (NR) in the same frequency band. The video explores the motivation, concept, and technique of DSS and demonstrates how to verify a DSS implementation using Keysight Vector Signal Analysis (89600 VSA) software.
DSS technology allows LTE and 5G NR to share the same spectrum resources dynamically based on traffic conditions. Engineers aim to achieve wide area coverage for 5G NR using DSS, a capability currently limited by LTE's occupation of lower frequency bands.
This video further delves into the techniques adopted by 5G NR for coexistence with LTE. It highlights the need for LTE and 5G NR systems to synchronize in both time and frequency domains. The video demonstration assumes a 15 kHz subcarrier spacing for 5G NR, which allows both technologies to operate on a common time-frequency grid.
A significant aspect of DSS is its transparency to LTE devices, meaning 5G NR must operate around LTE’s always-on signals. The video discusses how 5G data channels are time and frequency multiplexed or rate-matched around the LTE cell-specific reference signals.
The video also presents a demonstration of verifying a DSS implementation using a 10 MHz LTE signal with 64 QAM modulation. The demonstration aims to ensure that the DSS implementation does not impact LTE performance. The video shows how the combined waveform is downloaded into a signal generator and demodulated using the 89600 VSA software.
This video provides a comprehensive overview of DSS and emphasizes the importance of verifying a DSS implementation to ensure it does not impact LTE performance.
