QPSK Modulator on FPGA using 64 Values ROM
نویسندگان
چکیده
In many applications such as TDMA cellular telephone, OFDM, Bluetooth, Satellite communication etc. QPSK digital modulation technique is used due to its higher bandwidth efficiency, higher noise immunity and simpler circuit. Simpler circuit is having lower cost, smaller size and lower power dissipation. In this paper a new circuit for QPSK modulator is designed which improves the area of the circuit. It is having lower logic elements than conventional design which provide same output. The circuit designing is performed on Active-HDL9.2 and implemented on Spartan II (XC2S30-5PQ208) FPGA board using Xilinx ISE9.1i and results are observed on DSO using Digital to Analog Convertor (DAC). The area of the design is found to be lower in total logic elements than the conventional design. Keywords— QPSK, FPGA, ROM, Flip-Flops, Modulation etc.
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