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Type: Posts; User: Bob_C

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  1. Replies
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    Closed: Re: Lock -in Amplifier/ tuned amplifier in DSP

    Hi,

    See the following post in Business, Promotions, Advertising section of this forum.


    Special Offer....ONEoverT Digital Filter Designer for Firmware and FPGA/ASICs
  2. Closed: Special Offer....ONEoverT Digital Filter Designer for Firmware and FPGA/ASICs

    Normally priced at 300GBP, this is the completely unlimited version of one of the most widely used DSP applications. This release of ONEoverT with no restrictions, may be used to design FIR, IIR,...
  3. Closed: Sim900...Ensuring modem allways connects to Network

    Good Day,

    I hope the forum can provide some answers to this query.

    My modem has to send telemetry data at 6 hourly intervals to a web-server for two months. It can connect to the network and...
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    Closed: FIC or FAC decoder source

    Hi

    I require source code prefably C to extract the information from the DAB Fast Information Channel? I have a decoder implemented in hardware along with an embedded micro. The micro is to...
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    Closed: Sim900 Roaming to best network

    Hello,

    We have a simcard with network roaming capability. However when our modem with sim900 is switched on, there is no guarantee that it will attach to the network with the best signal strength....
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    Closed: http post parameters using sim900

    Hi,

    Can anyone suggest a way to send http parameters using the sim900. E.g. If I want to specify that the passsword parameter was abcde. I can send data in the body of the post but I need it in...
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    Closed: SIM900 and STM32 programming problem

    Hi,

    Does anyone have any STM32 C code for programming the SIM900. The code I've written uses interrupts but receives a lot of rubbish back in response from the modem. I continually send AT, and...
  8. Closed: [Moved] ONEoverT Digital Filter Designer...30GBP for two licenses only 5 days left

    Full version of ONEoverT Digital Filter Designer only 30GBP for the next five days. This will get you two full licenses, but the offer is finished on Friday 15th January. Check this forum or comp.dsp...
  9. Replies
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    Closed: Re: depuncture data from 1/3 to 1/4 bit rate

    Thanks for that. I'm looking at the DAB spec at the moment just to see if that explains how it is done. The FIC is coded at 1/3 rate using a 1/4 rate mother code. It seems as if it drops every forth...
  10. Replies
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    1,237

    Closed: depuncture data from 1/3 to 1/4 bit rate

    Hi,

    Can someone tell me the method used to depuncture data at 1/3 rate to get a rate of 1/4. Is it simply just adding a zero into every 3 bits to order to get 4 bits or is there more to it ?
    ...
  11. Replies
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    [SOLVED]Closed: Re: Is anyone workin on FFT Processor design?

    Fied point or floating point ??

    Bob
  12. Replies
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    1,710

    Closed: PAPR reduction with DQPSK

    Hi,

    I am designing a receiver where the transmitted signal is OFDM modulated by DQPSK. As DQPSK has does not have varying amplitude, do I need to design in any PAPR reduction circuitry. Using QAM,...
  13. Replies
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    Closed: puncturer in VHDL or verilog

    Hi,

    Anyone got code for a puncturer to change a received 1/4 rate to 1/3 rate?

    Thanks Bob
  14. Closed: Re: Anyone want to get involved in Digital Radio project

    Hi,

    Thanks to all that applied. There are enough people now so no need for further applications.
  15. Closed: Anyone want to get involved in Digital Radio project

    Hi,

    Looking for some people (preferably with practical experience) with to become involved in a part time digital radio development project.

    My background...a lot of DSP/FPGA/ASIC experience, I...
  16. Replies
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    Closed: Re: filters on FPGA

    ONEoverT from Tyder
  17. Closed: root raised cosine filter specifcations

    Thank you
  18. Replies
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    998

    Closed: Re: ANN: Tyd-IP Code Generator V3.1 released

    Hi Thinkie,

    The multirate filter module for coefficient and VHDL generation costs 899 GBP.

    Bob
  19. Replies
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    Closed: Re: Help ... IIR

    Use ONEoverT from Tyder.

    Bob
  20. Replies
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    Closed: ANN: Tyd-IP Code Generator V3.1 released

    Version 3.1 of Tyd-IP Code Generator has now been released. Now
    supporting multirate filter design, designers can create a wide range
    of IP, including filters, FFTs, NCOs etc. which can be...
  21. Replies
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    Closed: Need a PCB designed and made

    Hi,

    I require a PCB designed and manufactured. Initial volumes will be up to 20 per month for approx three months. After that numbers will rise. Please PM for more details.

    Bob
  22. Replies
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    Closed: Re: Design IIR filter

    Hi,

    If you want a prototype IIR, download ONEoverT, generate a project file and send it to them or email them with your specifications. It costs about $50 for an .edf or equivalent file. They...
  23. Replies
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    4,366

    Closed: Re: how to control appliances through mobile phone

    Hi,

    I've tried com1, com2 (only these ports on my PC) with different baud rates...9600 up to 115200 at 8,N,1.

    Still will not connect.

    Bob
  24. Replies
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    Closed: coonecting 6230 to pc using serial cable

    Hi,

    I have a nokia 6230 which I want to use as a modem to accept AT commands. I bought a ps2 null serial cable (not usb...I need to use ps2 serial cable) which using a adapter connects externally...
  25. Replies
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    4,366

    Closed: Re: how to control appliances through mobile phone

    Hi,

    I have a nokia 6230 which I want to use as a modem to accept AT commands. I bought a ps2 null serial cable (not usb...I need to use ps2 serial cable) which using a adapter connects externally...
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