Compression IP is used to put more data into a given fiber or microwave “link” in wireless systems. Using compression, a higher data rate can be transmitted on lower speed links which are generally cheaper. This is a goal across the industry; however, few have achieved it. When compressing data, some signal quality is lost. Based on its patented technology, Renesas has proven that it can do compression with very little loss of signal quality.

Download: Compression IP for Wireless Infrastructure Applications (PDF)
Download: Front-Haul Compression for Emerging C-RAN and Small Cell Networks White Paper (PDF)

Renesas IQ Compression IP for wireless systems offers the industry's highest performance for 3G and 4G systems
 

Definition

Compression is used to compress data in wireless systems on the link between the Remote Radio Unit (RRU) and the baseband card (wired over CPRI or CPRI over wireless front haul). Renesas is the first company to offer commercial IP that supports GSM, WCDMA, and LTE signals at full CPRI data rates, keeping high signal quality at compression rates up to 3:1.

Value Proposition

Compression IP makes wireless C-RAN architectures more viable by allowing RRUs to be placed remotely from baseband pools connected with low-cost fiber, saving large amounts of money at the system level. Renesas compression dramatically changes the overall cost of system deployment.

Features

  • IP can be deployed in ASIC or FPGA (Altera and Xilinx)
  • Based on multiple protected patents worldwide
  • GSM, WCDMA and LTE support
  • Small FPGA footprint
  • Compression ratios 1.5:1 to 3:1 range
  • EVM performance 0.5% to 3% for typical 3G and 4G wireless signals
  • Microsecond level latency at 307.2MHz
  • High-performance IP core supporting uncompressed data rate up to 9.8304Gbps
  • Common clock rates of 61.44MHz and 153.6MHz for FPGA and 61.44MHz, 153.6MHz, and 307.2MHz for ASIC

Benefits

Green Network Deployment 

  • Allows deployment of C-RAN and other network topologies at low cost and low network-level power with twice the compression performance of others in the industry 
  • Compression technology applicable to IQ samples over various protocols (e.g., Wireless Front-haul, CPRI Link) in BTS designs, allowing higher data rates to be transmitted over existing low-cost infrastructure. Existing compression solutions cannot meet these performance requirements at low EVM 

CAPEX

  • Reduces the number of fiber optic links required between the baseband processing resources and the RRH, saving both fiber optic transceiver cost and fiber optic cost
  • Enables reduction in the cost of the Remote Radio Head (RRH)
  • Reduces the number and link rate of the SerDes required for a given bandwidth, thus enabling lower cost FPGA implementations between the baseband processing block and the radio card

OPEX 

  • Reduces Operating Expense (OPEX) of using DWDM infrastructure to connect LTE units to centralized baseband units by reducing the number of links required to carry the same bandwidth

Interface