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IQ Data Compression IP

IDT’s Compression IP is used to fit more data into a given fiber or microwave link in wireless system applications. Using compression, data can be transmitted at a higher-rate using lower-speed, lower-cost links. IDT’s proven, patented technology offers industry-leading compression with minimal loss of signal quality.

  White paper: Front-Haul Compression for Emerging C-RAN and Small Cell Networks


IDT 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).  It may also be used to compress data at the DACs (digital to analog convertors). IDT is the first company offering commerical IP that can support GSM, WCDMA, and LTE signals at full CPRI data rates, keeping high signal quality at compression rates up to 4:1.

Value Proposition
Compression IP makes wireless C-RAN architectures more viable by allowing RRUs to be placed remote from Baseband Pools connected with low cost fiber, saving large amounts of money at the system level.  IDT Compression IP 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 2:1 to 4:1 range
  • EVM Performance 0.5% to 3% for typical 3G and 4G wireless signals
  • Sub microsecond latency for Compression + Decompression blocks @ CPRI line rates
  • Support line rates of up to 9.8304Gbps per IP instances
  • Supports a range of flexible Clock Frequencies, e.g., 61.44 MHz, 122.88 MHz, 153.6, 307.2 MHz

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 the CPRI and JESD204B serial streams 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)
  • Between the Digital processing block and the Data Converters on the Radio Card (JESD 204B implementations)
  • Reduces the number of SERDES lanes required between the Digital processing block and the Data Converters, reducing board size and complexity
  • 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.