low-cost underwater acoustic communication equipment draws more and more attention from the research community. The low complexity and high reliability multi frequency shift keying(MFSK) modulation provides an effective technical solution. However, the typical time-space-frequency characteristic of ...
Key words:MFSK;VHDL; modulation; demodulation 1. FPGA(Field Programmable Gate Array)现场可编程逻辑门阵列,它是在PAL、GAL、CPLD等可编程器件的基础上进一步发展的产物。它是作为专用集成电路(ASIC)领域中的一种半定制电路而出现的,既解决了定制电路的不足,又克服了原有可编程器件门电路数有限的缺点。它是当今...
Permutation coding and MFSK modulation for frequency selective channel. In: PROC. IEEE INT. SYMP. PERSO- NAL, INDOOR AND MOBILE RADIO COMMUNICATIONS, volumen 5, p. 2063-2066, Lisbon, Portugal, September 2002.K. W. Shum, "Permutation coding and MFSK modulation for fre- quency selective ...
(2) ForMFSKsignals with different modulation order, the frequency and phase differences of different signals are obvious; (3) Bi-spectrum slice can visually reflects the difference of severalMFSKsignals. 3 that differentMFSKsignals have different bi-spectrum slice curves. ...
Abstract :With the rapidly increasing interests in ocean observation and ocean Internet of Things,low -cost underwater acoustic communication equipment draws more and more attention from the research community.The low complexity and high reliability multi frequency shift keying(MFSK)modulation provides an ...
four different frequencies f1, f2, f3, f4 to send 2 bits at a time. To send 3 bits at a time, we can use eight frequencies, and so on. The frequencies need to be 2Df apart and the minimum value of 2Df should be at least S for the proper operation of modulation ...
Long-range Underwater Acoustic Information Transmission Through MFSK Modulation; 基于多进制频移键控调制的水声远程信息传输技术研究 2. Underwater Long-distance Remote Control Communication Method Based on MFSK; 基于多进制频移键控的水下远程遥控通信方法 3. Improved Modulation Classification Method for MFS...
Multiple hops/symbol FFH-SSMA with MFSK modulation and Reed-Solomon coding for indoor radio 来自 Semantic Scholar 喜欢 0 阅读量: 8 作者:J Wang,M Moeneclaey 摘要: A multiple-hopes-per-symbol fast-frequency-hopped spread-spectrum multiple-access (FFH-SSMA) system for indoor radio communication ...
Modulation MFSK ACF — Emission Designator — Bandwidth 154 Hz,218 Hz,316 Hz,330 Hz,435 Hz,630 Hz Location Worldwide Short Description MFSK is a family of multi-frequency shift keying digital transmission modes. MFSK-8 and MFSK-16 are two well-known amateur radio modes. I/Q Raw Recording...
由于当前对PNC的研究仅限于相移键控(Phase Shift Keying,PSK)调制,正交幅度调制(Quadrature Amplitude Modulation, QAM)等几种简单的调制方式,PNC出色的抗噪声性能和改善网络吞吐量的能力也只在基于这些调制方式的系统中得到了证明。 无论是在国内还是国外,对基于频移键控调制的物理层网络编码的研究还比较少,对基于...