CLOVER2000

CLOVER is the name of a series or class of modem modulation techniques (“waveforms”) specifically designed for use over high frequency (HF) radio systems.

Modulation schemes

In ARQ mode, all CCB’s (CLOVER Control Blocks) use BPSK modulation and data blocks may be sent using BPSK, QPSK, 8PSK (see phase-shift keying), 8P2A, or 16P4A (see QAM) modulation. Data is sent in 255-byte blocks. The FEC broadcast mode of CLOVER-2000 is usually disabled although special formats are available for specific applications.[2]

Radio Interface requirements for CLOVER-2000

The CLOVER waveform offers high performance, error correction, and spectral efficiency. CLOVER is specifically designed for use over HF radio communications links. It may be used with virtually any modern HF SSB radio. However, certain special set-up and adjustment techniques are required to get maximum performance when using CLOVER.[3]

See also

References

  1. ↑ Steve Ford, WB8IMY (2001). "Chapter 6 - CLOVER". ARRL's HF digital handbook. Newington, CT: The American Radio Relay League. ISBN 0-87259-823-3.
  2. ↑ Ford, Steve (2007). ARRL's HF digital handbook (4th ed.). Newington, CT: American Radio Relay League, Inc. p. 7-1. ISBN 9780872591035.
  3. ↑ Henry, Bill. "CLOVER - The Technology Grows and Matures Lessons Learned and Pleasant Surprises" (PDF). TAPR.

External links


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