KL-920 Advanced Digital Communication System




Advanced Digital Communication System - for educational teaching, training, and learning of ASK / FSK transmission in wireless ISM band, FEC codec techniquen , digital data formatting , Manchester coding, SONET transportation frame, TDMA, PCM, TDM, DSSS, CDMA, Digital filter, etc…

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Category Telecommunications

KL-920 is implemented with high speed MCU, DSP and high flexible FPGA devices, giving students more opportunities to setup and observe digital data signals at each transmission stage. 

Learning topics include ASK / FSK transmission in wireless ISM band, FEC codec technique (block code and convolution code), digital data formatting (Preamble, ID, FEC and CRC), Manchester coding, SONET transportation frame (STS-1 and STM-1), TDMA, PCM, TDM, DSSS, CDMA, Digital filter, etc…


1. Complete digital transmitting data format including start bit, preamble, identifier, data with FEC
    coding, CRC coding, and stop bit
2. All digital transmitting data are encoded with Manchester code before transmitting via ASK or FSK
3. Programmable data, data rate, preamble, identifier, and noise from DIP switches
4. FEC encoding, CRC mechanism, and Manchester coding can be included or ignored before wireless
    ISM transmission.
5. Transmit and receive 3 sets of audio signals in TDMA channel via STS1 and STM1 frame
6. Dual channel TDM transmission with audio signal modulated by PCM or A-Law/µ-Law compander

 1. Data Spread-Spectrum Modulation and Manchester Encoding
  2. Serial Data Manchester Encoding/Decoding
  3. Spread-Spectrum Data Sampling, Decoding and Checking
  4. ASK Digital Data Transmission
  5. FSK Digital Data Transmission
  6. Data Hamming Encoding and Manchester Encoding
  7. Digital Data Decoding and Error Correction
  8. Digital Data ASK/FSK Transmission and Decoding
  9. Convolutional Encoding and Data Interleaving
10. Viterbi Decoding and Error Correction
11. Viterbi Decoding and FSK Transmission
12. 64-Byte Data Transmission
13. 1-Byte Data Transmission 
14. 1-Byte ADC Data Transmission 
15. 10-Byte ADC Data Transmission 
16. PC Digital Data Transmission 
17. SONET STS-1 Multiplexing
18. SONET STS-1 Demultiplexing
19. SONET STM-1 Multiplexing
20. SONET STM-1 Demultiplexing
21. TDM Codec
22. DSP-Based FIR Filters
23. Multichannel ADC
24. SPI and Serial DAC
25. PWM Modulation
26. CDMA Encoding
27. CDMA Decoding
28. DSSS Encoding
29. DSSS Decoding
30. µ-Law Encoding
31. A-Law Encoding
32. Time Division Multiplexing and Data Compressing
33. Time Division Demultiplexing and Data Expanding

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