数字调制解调技术在数字通信中占有非常重要的地位，数字通信技术与FPGA的结合是
现代通信系统发展的一个必然趋势。文中介绍了QPSK调制解调的原理，并基于FPGA实现了QPSK调制解调电路。MAX+PLUSII环境下的仿真结果表明了该设计的正确性。
关键词：QPSK；FPGA；调制；解调
Abstract: Technology of digital modulation and demodulation plays a important role in digital
communication system, the combination of digital communication technology and FPGA is a
certainly trend .The paper introduces the principle of QPSK modulation and demodulation, the
circuit are also be realized based on FPGA. The simulation result under MAX+PLUSII
environment provides the correction of the design.
Key words: QPSK; FPGA; modulation; demodulation
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