WANG Dan, LIU Hailin, YANG Junjie. A Residual Carrier Tolerant QAM Receiver Architecture Based on Time-Varying Blind Source Separation[J]. Chinese Journal of Electronics, 2016, 25(6): 1040-1044. doi: 10.1049/cje.2016.10.019
Citation: WANG Dan, LIU Hailin, YANG Junjie. A Residual Carrier Tolerant QAM Receiver Architecture Based on Time-Varying Blind Source Separation[J]. Chinese Journal of Electronics, 2016, 25(6): 1040-1044. doi: 10.1049/cje.2016.10.019

A Residual Carrier Tolerant QAM Receiver Architecture Based on Time-Varying Blind Source Separation

doi: 10.1049/cje.2016.10.019
Funds:  This work is supported by the Natural Science Foundation of Guangdong Province (No.2014A030313507, No.2014A030310257) and the Projects of Science and Technology of Guangzhou (No.2014J4100209, No.201508010008).
  • Received Date: 2014-05-20
  • Rev Recd Date: 2014-08-16
  • Publish Date: 2016-11-10
  • In case of Quadrature amplitude modulated (QAM) transmission, the residual carrier affects the quality of the received signal. We show that the carrier tracking problem is equivalent to a time-varying Blind source separation (BSS) problem if there exists a residual carrier. This motivates us to propose a new receiver architecture, that is tolerant to residual carrier, based on a Recursive least squares (RLS) BSS algorithm. Simulations are provided to show the promising performance of the proposed algorithm for tracking the residual carrier and for improving the quality of the received signal.
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