Implementation of Low Rate, High Accuracy Broadband Signal Sampling by Using Adaptive Beam Forming Technique

Abstract:

It is required that an ADC for sampling broadband signal directly has high sampling rate, and this will make the sampling accuracy decrease and difficult to be realized. This paper introduces an idea that using multi-channel and low rate ADCs performs sampling broadband signal, then presents a novel method of utilizing adaptive beam forming technique to recover complete bandwidth of the broadband signal. Application of this method can implement both low rate sampling and high accuracy; in addition, it is robust to channel delay and other errors. The result of processing the simulated data has verified the effectiveness of this method.

• Periodical: Advanced Materials Research (Volumes 148-149)
• Pages: 308-311
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.148-149.308
• Online since: October 2010
• Authors: Lun Ma, Xiang Dong Wu
• Keywords: Adaptive Beamforming, Analogue/Digital Converter (ADC), Multi-Channel Sampling

References

[1] R. H. Walden, Analog-to-digital converter survey and analysis, IEEE Selected Areas in Communications. 17(4), 539–550(1999).

DOI: 10.1109/49.761034

[2] T. R. George, Ultra-wideband Radar Receiver, Proceedings of SPIE, 1631, 174–180(1992).

[3] J. L. Brown, Multi-channel sampling of low-pass signals, IEEE Trans. On Circuits System, 28(2), 101–106(1981).

DOI: 10.1109/tcs.1981.1084954

[4] C. E. Cook and M. Bernfeld, Radar Signals, Academic press, New York(1967).

[5] J. Capon, High resolution frequency-wavenumber spectrum analysis, Proceedings of IEEE, 57(8), 1408–1418(1969).

DOI: 10.1109/proc.1969.7278

[6] I. S. Reed, J. D. Mallatt and L. E. Brennan, Rapid convergence rate in adaptive arrays, IEEE Trans. On AES, 10(6), 853–863(1974).

DOI: 10.1109/taes.1974.307893