In this paper, the theory of DQPSK and the architecture of DQPSK transmitter system are first analyzed.
文章首先分析了DQPS K调制技术理论基础和直接射频调制发射系统体系结构。
This paper proposes a design principle and realization method of the baseband DQPSK modem in radio communication system.
提出了一种无线通信中基带调制解调器的设计原理和实现方法。
Then, a method to solve the technical difficulties in the realization of the narrowband DQPSK transmitter system is proposed.
然后，针对工程实践，解决了窄带直接射频调制发射系统设计过程中出现的技术难点。
This paper presents a new algorithm used to demodulate high code rate DQPSK telemetry signal by digital frequency measurement.
本文根据高码速率DQPSK遥测信号的特点，介绍了一种通过数字瞬时测频来完成对高码速率DQPSK信号解调的方法。
Finally, the plan of implementing DQPSK digital modulation signal regeneration through adopting DSP chip is discussed and diagrams are given.
最后讨论了采用DSP芯片实现DQPS K数字调制信号再生处理的方案，给出了框图。
The COFDM modulation part is made up of blocks partition, COFDM symbol forming, DQPSK symbol mapping, frequency interleaving, difference modulation and COFDM modulation and so on.
实现不同帧之间的比特交织等。COFDM调制部分包括块划分及COFDM符号形成、DQPSK符号映射、频率交织、差分调制及COFDM调制等环节。
The COFDM modulation part is made up of blocks partition, COFDM symbol forming, DQPSK symbol mapping, frequency interleaving, difference modulation and COFDM modulation and so on.
实现不同帧之间的比特交织等。COFDM调制部分包括块划分及COFDM符号形成、DQPSK符号映射、频率交织、差分调制及COFDM调制等环节。
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