Rakon展示了经过O-RAN优化的微型OCXO

Rakon将在2024年巴塞罗那MWC展上展示其业界首个用于先进无线电网络和电信数据中心的长期保持解决方案。
错误交换OCXO（MercuryX E2）是Rakon新发布的变体水银小型集成电路-OCXO晶振。它增强了网络同步器评估板上的现有同步功能，为系统增加了频率误差交换处理和老化补偿功能，使保持性能提高了一倍。
Rakon瑞康晶振产品管理负责人Reza Sedehi表示，错误交换OCXO是Rakon最新的突破性创新，也是同类产品中的第一个同步解决方案。
Sedehi表示:“相位同步保持对于5G DUs、RAN、无线电和电信数据中心至关重要，因为它可以降低移动运营商的整体运营成本。
“传统上，性能接近24小时保持的时钟体积庞大、耗电量大且价格昂贵。误差交换OCXO石英晶体是一种出色的解决方案，可实现更小、更低功耗的参考时钟，从而实现经济高效的系统级同步。我们的新解决方案对于寻求全包式、高性价比和小型化解决方案的O-RAN设备供应商尤其有价值。”
误差交换同步是一种技术，旨在通过使用网络处理器和同步PLL显著增强OCXO石英晶体振荡器保持能力（性能提升高达两倍），通常在IEEE 1588实施中提供。
PLL和处理器计算OCXO频率和1PPS信号之间的误差，然后将其反馈给OCXO进行老化补偿。OCXO将温度变化引起的频率残余误差和老化补偿误差结合起来，并将其反馈到处理器中进行系统频率校正。E2OCXO概念使Rakon OCXO恒温晶体振荡器能够在7x5mm的紧凑封装中在真实环境下实现8小时的保持。
Mercury E2OCXO正处于原型制作阶段，将提供14x9、9x7和7x5毫米三种封装。14x9封装的样品将于2024年年中上市。

Rakon展示了经过O-RAN优化的微型OCXO

Rakon demonstration of groundbreaking O-RAN optimised miniature OCXO with extended holdover at MWC Barcelona 2024

Rakon is demonstrating its industry-first long holdover solution for advanced radio networks and telecom data centres at MWC Barcelona 2024.
The Error Exchange OCXO (MercuryX E2) is a variant of Rakon’s newly released MercuryX small form factor IC-OCXO. It enhances the existing synchronisation capabilities on a network synchroniser evaluation board by adding frequency error exchange processing and ageing compensation to the system – doubling the holdover performance.
Rakon Head of Product Management, Reza Sedehi, says the Error Exchange OCXO is Rakon’s latest groundbreaking innovation and the first synchronisation solution of its kind.
“Phase synchronisation holdover is essential in 5G DUs, RAN, radios and telecom data centres as it reduces the overall operational cost for mobile carriers,” says Sedehi.
“Traditionally, clocks performing close to 24-hour holdover are bulky, power-hungry and expensive. The Error Exchange OCXO is an elegant solution that will result in smaller, low-power reference clocks for cost-effective system-level synchronisation. Our new solution will be particularly of value for O-RAN equipment vendors who look for turnkey, cost-effective and miniaturised solutions.”
Error Exchange Synchronisation is a technique designed to significantly enhance the capability of OCXO holdover (up to twice the performance) by using a network processor and a synchronisation PLL, typically available in IEEE 1588 implementations.
The PLL and the processor calculate the error between the OCXO frequency and the 1 PPS signal, then feed it back to the OCXO for ageing compensation. The OCXO combines the frequency residual error due to temperature variations and ageing compensated error and feeds it back into the processor for system frequency correction. The E2OCXO concept enables Rakon OCXOs to achieve 8 hours of holdover under real world conditions in a compact 7 x 5 mm package.
The Mercury E2OCXO is in prototyping stage and will be available in a 14 x 9, a 9 x 7 and a 7 x 5 mm package. Samples of the 14 x 9 package will be available mid 2024.