hi, I am working on an FPGA project. It is a CDMA-based point-to-point communication system; two FPGAs each works as a transceiver. The final stage of the project is to send the data via the serial port (RS-232) to an RF module. Can any one support me a low-cost, serial (RS-232) Rf module capable of managing data rates up to 1.25 Mb/s and working reliably within buildings giving a suitable range ( >10 meters).
If you just want an RF module that takes in and spits out RS-232, why do you care whether the RF transceiver uses CDMA, TDMA, FSK, or any of the other bazillions of modulation/division schemes out there?
I suspect your cheapest solution would be to purchase RS-232 to Ethernet converters and then just use off-the-shelf 802.11g WiFi equipment; it easily meets your speed and distance requirements. However, obtaining a converter that works at 1.25Mbps "RS-232" may be pretty challening; that's much higher than usual.
---Joel
Hello Ayman,
Check out Nordic, they have serial port RF chips:
Regards, Joerg
Joel, The main project is a CDMA Communication System, simply it is my graduation project.
I do not care about the RS-232 interface or whatever interface, just it was the preferred since it is already attached to the Spartan-3 board from Xilinx.
Sure I concern about CDMA since it is my project. The 1.25 Mb/s is the spread spectrum data not the data rate itself (9.6 kb/s). In CDMA, Bandwidth is scarified for other purposes, like security, anti jamming.......
Really I have tried to use the USB Bluetooth dongle with the USB 2.0 & Bluetooth 2.0, cores embedded on the FPGA but unfortunately I found no data sheets for this widely available device so I turned to RS-232.
Joel, The main project is a CDMA Communication System, simply it is my graduation project.
I do not care about the RS-232 interface or whatever interface, just it was the preferred since it is already attached to the Spartan-3 board from Xilinx.
Sure I concern about CDMA since it is my project. The 1.25 Mb/s is the spread spectrum data not the data rate itself (9.6 kb/s). In CDMA, Bandwidth is scarified for other purposes, like security, anti jamming.......
Really I have tried to use the USB Bluetooth dongle with the USB 2.0 & Bluetooth 2.0, cores embedded on the FPGA but unfortunately I found no data sheets for this widely available device so I turned to RS-232.
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