Implementation of QPSK Modem using TMS320C31

TMS320C31을 이용한 QPSK 모뎀 구현

  • Published : 2001.08.01

Abstract

In this paper, we implemented QPSK(Quadrature Phase-Shift Keying) modem which is widely used for communication systems, using a general Digital Signal Processor(DSP), TM320C31. Up to now, almost all of communication systems consist of hardware. However, the implemented system herein is composed of software and hardware part. Software part includes the modulation process, before passing D/A(Digital-to-Analog Converter) and the demodulation process, after passing A/D(Analog-to-Digital Converter) in IF(Intermediate Frequency) node. Hardware part is related to input, output and process of signal. To demonstrate the successful implementation of modem, the output results obtained from DSP processor are compared with the simulated result on the personal computer.

Keywords

References

  1. Digital Communication Fundamentals and Applications B. Sklar
  2. AT&T and Bellcore Design of Digital Carrierless AM/PM Transceivers W. Y. Chen;G. H. Im;J. J. Werner
  3. High-Speed Digital Design a Handbook of Black Magic H. Johnson;M. Graham
  4. IEEE Trans, Commun. v.38 On the detection and classification of quadrature digital modulations in broad-band noise A. Polydoros;K. Kim
  5. IEEE J. Selected Areas in Comm. v.13 Bandwidth-Efficient Digital Transmission up to 155Mb/s over Unshielded Twisted Pair Wiring G. H. Im;J. J. Werner
  6. TMS320C3x User's Manual Texas Instruments
  7. TMS320C3x General-Purpose Applications Texas Instruments
  8. TMS320 Floating-Point DSP Code Generation Tools(Release 4.60). Texas Instruments
  9. Digital Communications Simon S. Haykin
  10. C 언어로 쉽게 쓰는 TMS320C31 박귀태;이상락
  11. 경희대학교 석사학위 논문 PBC 방식을 이용한 PSK 신호의 자동식별 시뮬레이터 구현 박상용