802.11g PHY IP Core

Ittiam's 802.11g PHY IP Core is a licensable and synthesizable HDL implementation of IEEE Standard 802.11g 2003 Edition in VHDL/Verilog. The IEEE 802.11g specification specifies the Physical Layer Entity for a further higher data rate extension in the 2.4 GHz ISM band which builds on the 802.11b standard and uses Orthogonal Frequency Division Multiplexing (OFDM) system similar to 802.11a standard to achieve higher data rates.

The standard provides full backward compatibility with the 802.11b standard. It supports the 802.11b specified data rates of 1, 2, 5.5 and 11 Mbps and adds further data rates of 6, 9, 12, 18, 24, 36, 48 and 54 Mbps using OFDM modulation. Among these OFDM data rates, the support of transmitting and receiving at 6, 12 and 24 Mbps is mandatory. The OFDM waveform uses 52 sub-carriers that are modulated using Binary or Quadrature Phase Shift Keying (BPSK/QPSK), 16-Quadrature Amplitude Modulation (16-QAM) or 64-Quadrature Amplitude Modulation (64-QAM). Forward Error Correction (convolutional coding) is used with a coding rate of 1/2, 2/3 or 3/4.

Technical Specification

• Fully compliant to IEEE 802.11g Standard 2003
• DSSS, CCK and OFDM based technology
• Supports all data rates and modulation schemes: 1, 2, 5.5, 11, 6, 9, 12, 18, 24, 36, 48 and 54 Mbps (DSSS/CCK/BPSK/QPSK/16-QAM/64-QAM)
• Optimized implementations of Viterbi Decoder and 64-point FFT
• Channel estimation and frequency domain equalization for OFDM
• Multipath combating with high performance Rake+ISI+ICI equalizer for DSSS/CCK modes of operations
• Carrier and Symbol Timing Synchronization algorithms
• Optimized interfaces to Ittiam 802.11 MAC solution (customizable to other MAC solutions) and third party RF chipsets
• Fully synthesizable and optimized for low gate count
• Low implementation loss
• Fully verified and real-time tested on a FPGA based development platform
• Considerations for easy ASIC integration
• Delivered Package contains VHDL/Verilog source code, VHDL/Verilog build scripts, synthesis and test scripts, golden test vectors, test benches, simulation and synthesis reports, user and reference manuals
• Validated on Ittiam WLAN Development Platform
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Applications

• SoC designs supporting 802.11 interfaces
• Wireless LAN NIC (Stations)
• Wireless LAN Access Points and Bridges
• Residential Gateways
• Digital Audio / Video Products with Wireless LAN connectivity

Contact

• For details contact mkt@ittiam.com