New Raspberry Pi SDR Technology Boosts 5G Small Cells

Lime Microsystems, a leading company based in the UK, has recently unveiled its latest innovation in the field of software-defined radio (SDR) systems. The new LimeNET Micro 2.0 DE (Developer Edition) is a cutting-edge modular radio platform that leverages the power of the Raspberry Pi CM4 compute module in combination with the LimeSDR XTRX SDR. This advanced system is mounted on the state-of-the-art LimePSB RPCM main board, which the company claims offers significantly enhanced versatility compared to its predecessor.

Previously, the limitations of the older version of LimeNET Micro were evident due to its reliance on a less powerful compute module (CM3) and an integrated SISO radio. However, with the introduction of the Raspberry Pi CM4 and LimeSDR XTRX SDR in the new LimeNET Micro 2.0 DE, researchers and developers now have access to a more robust and flexible platform for their projects.

Notably, researchers at Vodafone have already utilized the Raspberry Pi 5 for the design of a 5G small cell, showcasing the potential of such technologies in the telecommunications industry. The deluxe version of the LimeNET Micro 2.0 DE comes fully equipped with the Amarisoft 5G stack and core, two smartphones, and ten SIM cards, offering a comprehensive turnkey solution for private 5G network deployment.

For those seeking customized configurations, the LimePSB RPCM board can be populated with the Raspberry Pi CM4 and a mini PCIe card, allowing for greater flexibility in system design. This adaptability also positions the platform well for future upgrades, such as the upcoming CM5 compute module currently undergoing testing by customers ahead of its anticipated launch later this year.

In a move that has piqued the interest of US intelligence agencies, Lime Microsystems' innovative approach to flexible radio technology has garnered attention for its potential applications in various sectors. The compact LimeNET Micro 2.0 DE board, measuring 170 mm x 110 mm, can be powered through a barrel jack connector, USB Power Delivery, or power over Ethernet PoE, providing users with multiple options for powering the system.

Featuring an integrated 2x2 MIMO front end module (FEM) with Qorvo driver amplifiers, the LimeNET Micro 2.0 DE offers higher output power and an extended coverage range while maintaining the frequency agility that sets Lime's products apart. The inclusion of integrated low noise amplifiers (LNAs) and SPDT switches enables seamless operation in both FDD and TDD modes, catering to diverse operational requirements.

Currently available on Crowdsupply, the LimeNET Micro 2.0 DE developer kit is presented in an acrylic box alongside the Raspberry Pi CM4 and SDR board, providing enthusiasts and professionals with a comprehensive solution for exploring the capabilities of this state-of-the-art software-defined radio system. For more information, visit www.limemicro.com.