from Altera Corporation
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Please contact your local Altera sales representative for a copy of this reference design. The use of this design is governed by, and subject to, the terms and conditions of the Altera Hardware Reference Design License Agreement.
Overview
Ranging functionality is required at the base station to determine the presence and timing offset of each subscriber. The relatively high rate of code correlation operations involved make ranging a good target for FPGA-based implementation. Altera’s ranging reference design demonstrates how orthogonal frequency-division multiple access (OFDMA) ranging can be efficiently implemented in Stratix® and Arria® series FPGAs. You can use the reference design as a starting point to accelerate designs based on the 802.16e-2005 standard. Altera supplies the reference design as clear-text register transfer level (RTL) HDL.
Features
- Compliant to mandatory parts of IEEE802.16e-2005 specifications
- Initial ranging, bandwidth contention, periodic ranging, and handover modes supported
- Support for multiple ranging channels
- Maximum number of channels is the synthesis time parameter
- Support for multiple antennas
- Adaptive threshold for code detection
- Improves performance under noise and fading channel conditions
- Timeshare same hardware between ranging codes, ranging channels, and multiple antennas
Demonstrated Altera Technology
Block Diagram
Figure 1. Advanced Uplink Receiver Functions
Related Links
Reference Designs Disclaimer
These reference design illustrations may be used within Altera Corporation devices only and remain the copyrighted property of Altera. They are being provided on an "as-is" basis and as an accommodation, and therefore all warranties, representations, or guarantees of any kind (whether express, implied or statutory) including, without limitation, warranties of merchantability, non-infringement, or fitness for a particular purpose, are specifically disclaimed. Altera expressly does not recommend, suggest, or require that these examples be used in combination with any other product not provided by Altera.
