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Author = Zhu, Xiao-Wei;
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A channelized sideband distortion model for suppressing unwanted emission of Q-band millimeter wave transmitters
(2017)
Yu, Chao; Sun, Honglei; Zhu, Xiao-Wei; Zhu, Anding
A channelized sideband distortion model for suppressing unwanted emission of Q-band millimeter wave transmitters
(2017)
Yu, Chao; Sun, Honglei; Zhu, Xiao-Wei; Zhu, Anding
Abstract:
2016 IEEE MTT-S International Microwave Symposium (IMS), San Francisco, California, USA, 22-27 May 2016
In this paper, a channelized sideband distortion model is proposed to suppress the unwanted emission of Q-band millimeter wave (mmWave) transmitters in wideband contiguous carrier aggregation scenarios. By employing this model, the compensating bandwidth or center frequency can be agilely controlled. Experiments were conducted on a 40 GHz mmWave power amplifier to validate this idea. The satisfactory performance proved that the proposed model is a promising candidate for future 5G applications.
http://hdl.handle.net/10197/8642
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Single-Model Single-Feedback Digital Predistortion for Concurrent Multi-band Wireless Transmitters
(2017)
Yu, Chao; Xia, Jing; Zhu, Xiao-Wei; Zhu, Anding
Single-Model Single-Feedback Digital Predistortion for Concurrent Multi-band Wireless Transmitters
(2017)
Yu, Chao; Xia, Jing; Zhu, Xiao-Wei; Zhu, Anding
Abstract:
In this paper, a novel single-model single-feedback digital predistortion (DPD) technique is proposed to linearize concurrent multi-band wireless transmitters. By employing carrier relocation and band-limiting functions in digital signal processing, DPD model complexity is significantly reduced and only one narrowband feedback loop is required for data acquisition. In the new system, the linearization bandwidth can be arbitrarily reconfigured, which provides considerable flexibility for DPD system design in wideband concurrent operations. Experimental tests were conducted to validate various cases including a concurrent quad-band scenario that is reported for the first time to date. Excellent performance demonstrates that the proposed approach provides an effective solution for reducing DPD system implementation complexity and cost in both digital and analog domains for future wideband concurrent multi-band transmitters.
Science Foundation Ireland
http://hdl.handle.net/10197/8401
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