کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
444378 | 692970 | 2015 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Balanced RF-circuit based self-interference cancellation for full duplex communications
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی کامپیوتر
شبکه های کامپیوتری و ارتباطات
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چکیده انگلیسی
Self-interference cancellation in the analog domain is critical to achieve full duplex wireless communications. However, the capability of analog self-interference cancellation is not fully explored. To this end, a new approach of analog self-interference cancellation is developed in this paper. More specifically, a balanced RF frond-end circuit is designed to allow a signal to propagate through symmetrical paths such that: (1) transmit signals taking different paths to arrive at the receiver can be cancelled; (2) receive signals from different paths are simply added at the receiver. As a result, self-interference is gracefully cancelled without impacting the normal operation of transmission and reception. Furthermore, this new approach includes several distinct features. First, it can achieve high analog self-interference cancellation. Implementation and experiments are conducted to validate the new approach, and experimental results show that it can achieve more than 65Â dB of self-interference cancellation over 5Â MHz bandwidth and 52Â dB cancellation over 100Â MHz bandwidth with a flat frequency response. Second, the new approach can be easily integrated with existing analog self-interference cancellation schemes to deliver much higher self-interference cancellation. Third, it can be easily extended to MIMO communications in a scalable way. Experiments show that our proposed antenna cancellation schemes are sufficient to achieve the goal of analog self-interference cancellation for MIMO communications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ad Hoc Networks - Volume 24, Part A, January 2015, Pages 214-227
Journal: Ad Hoc Networks - Volume 24, Part A, January 2015, Pages 214-227
نویسندگان
Aimin Tang, Xudong Wang,