Kamis, 22 Januari 2009

XIRKA : WiMAX Chipset from Indonesia

designed to compatible with WiMAX technology or broadband wireless access. This chipset can be applied both in fixed and mobile WiMAX.

XIRKA’s uniqueness is the ability to accommodate special requests for customization in order to create the best solution for our clients. This will enable any WiMAX equipment integrator and solution providers the ability to implement their own design and products for subscriber station (SS), mobile station (MS) and USB peripherals (including dongle and minicards).

Specifications :
The software runs on SPARC processor, providing flexibility, while the MAC hardware acceleration greatly enhances system performance and throughput. Channel bandwidth is supported up to 10 MHz.


  • Standard Compatibility : IEEE 802.16e-2005
  • Sub-carrier OFDMA : 1024 and 512 (reconfigurable)
  • DC Frequency : 1
  • Channel Bandwidths : 5 and 10 MHz
  • Cyclic Prefix time Ratio : 1/4, 1/8, 1/16, 1/32
  • Forward Error Correction (FEC) : Concatenated Reed-Solomon, Convolutional Encoding,Randomization, Interleaving
  • Modulation : Adaptive (BPSK, QPSK, QAM16, QAM64)
  • Front End Uplink Interface : Dedicated Parallel port or internal DAC/ADC
  • Front End Downlink Interface : Dedicated Parallel port or internal DAC/ADC
  • Working Frequency : Below 11 GHz licensed band
  • Duplex : Time division duplex (TDD) or/and Half FDD
  • Typical applications : subscriber station (SS) and mobile station (MS)
  • High-performance modulation capabilities Flexible configuration for easy system integration:not mentioned

Data Interfaces

  • SDIO

External Interface

  • 10/100 Ethernet MAC
  • USB
  • Status LED
  • Debug JTAG
  • RS-232 ports


  • Real-time services
  • Concatenation, fragmentation, packing
  • Automatic repeat request (ARQ)
  • Payload header suppression (PHS)
  • IPv6, 802.3 Convergence Sub-Layers
  • Sleep and Idle mode power management support
  • BE & UGS QoS classes


  • GPIO (8)
  • unit UART
  • 3 unit 32 bit Timers
  • JTAG

System Block Diagram

  • AGC: Automatic Gain Control (receiver gain)
  • AFC: Automatic Frequency Control (from frequency synchronizer)
  • On-board power supplies (12V in)

XIRKA expected to enter the mass production stage for BWA chipset IEEE 802.16e-2005 in the first quarter of 2009 future. Initial projected production will be 200.000 units.


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