Altera introduced the Common Public Radio Interface (CPRI) v4.1 intellectual property (IP) core. The CPRI v4.1 IP core supports channel speeds up to 6.144 Gbps, LTE and WiMAX standards, WCDMA, CDMA, and other air-interface standards. The CPRI enables developers to easily upgrade from proprietary CPRI implementations to a highly configurable solution supporting today’s standards, improving customer productivity and cost of ownership. The CPRI v4.1 core is available either in encrypted IP or as source code for complete user control.
Altera CPRI v4.1 IP Core Features
- Built-in support for CPRI v4.1 and backward compatible mapping methods
- Line rate support up to 6.144 Gbps requiring a clock rate as low as 153.6 MHz to ease timing closure
- Up to 24 antenna carriers per IP core
- Integrated 10/100 Ethernet MAC and HDLC controllers
This fully configurable, off-the-shelf solution complements Altera’s 40-nm portfolio of Arria II GX FPGAs for up to 3.072G CPRI line rates and Stratix IV GX FPGAs and HardCopy IV ASIC solutions for up to 6.144G CPRI line rates. The IP core is ideal for wireless applications — such as multi-mode air-interface support, single-hop and multi-hop system topologies, and advanced MIMO antenna configurations. The CPRI includes test benches that perform start-up sequences for common configuration modes so developers can get up to speed quickly and focus on differentiating their product.
The Altera CPRI IP core enables customers to minimize design efforts and accelerate time to market for standards-based radio access products while still retaining the ability to customize for the unique requirements of their applications. The core combined with Altera’s transceiver technology helps OEMs to address future basestation requirements including 10-Gbps CPRI links.
More information: Altera CPRI IP