Soft decision decoding / hard decision decoding, error correction codes that support both.
The "Viterbi Decoder" is an FPGA IP core for Viterbi decoding that corresponds to convolutional codes, which are widely used as representative error correction coding schemes. It supports both soft decision decoding and hard decision decoding. It is compatible with constraint length 7 (171 oct, 133 oct) convolutional codes, which are standard in many communication standards including IEEE802.11a. It can be applied to various applications. 【Features】 ■ Achieves a maximum line speed of approximately 110 Mbps and is adaptable to the IEEE802.11a standard ■ Built-in de-puncturing function ■ Supports coding rates of 1/2, 2/3, 3/4, 4/5, 5/6, 6/7, and 7/8 ■ Implements a speed conversion block corresponding to the coding rate ■ Configuration that does not use memory blocks (EAB) ■ Allows setting of the traceback length via parameters ■ Configurable soft decision bit width *For more details, please refer to the PDF document or feel free to contact us.
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basic information
【Scale and Speed (Reference)】 ■FPGA Device ・Using ALTERA's CycloneIII (EP3C10E144C7) with a traceback amount of 35 ■Hard Decision (NC=1) ・Number of LEs used: Approximately 5,400 LEs ・Maximum operating speed: Approximately 110 MHz ■Soft Decision (NC=4) ・Number of LEs used: Approximately 6,300 LEs ・Maximum operating speed: Approximately 90 MHz ■Soft Decision (NC=8) ・Number of LEs used: Approximately 8,200 LEs ・Maximum operating speed: Approximately 85 MHz *For more details, please refer to the PDF document or feel free to contact us.
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For more details, please refer to the PDF document or feel free to contact us.
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Techno Create Co., Ltd. develops and commercializes hardware/software collaborations based on reliable communication technology and FPGA technology. We handle various products under our own brand, including "voice band modems" and "in-house line modems." Techno Create supports your company's innovation with solid technology and creativity. If you are considering system development and prototyping with a focus on real-time performance, please feel free to consult with us.
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