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SSD(Simultaneous Single Band Duplex) System Using RF Cancellation and Digital Cancellation
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 Title & Authors
SSD(Simultaneous Single Band Duplex) System Using RF Cancellation and Digital Cancellation
An, Changyoung; Ryu, Heung-Gyoon;
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 Abstract
In this paper, we design SSD(simultaneous single band duplex) system using RF(radio frequency) cancellation and digital cancellation. we analyze characteristic of residual self-interference after RF Cancellation signal when error of phase shifter occur in RF cancellation. When phase shifter error of , , and occur in RF cancellation, residual self-interference signal power after RF cancellation is bigger than desired signal power of distant station. So, it is impossible to receive transmit data of distant station. but we confirm that it is possible to receive transmit data of distant station by digital cancellation with frame structure. Also, in digital cancellation with frame structure, if residual self-interference signal after RF cancellation is too large then LMS algorithm requires more time to estimate self-interference channel. That is, performance degradation occurs because self-interference channel estimation has not completed in estimation frame.
 Keywords
SSD;RF cancellation;full duplex;self-interference cancellation;spectrum efficiency;
 Language
Korean
 Cited by
1.
전이중 통신 방식을 사용하는 무선랜을 위한 간섭 제거 기법,한수용;송충근;최지훈;

한국통신학회논문지, 2015. vol.40. 12, pp.2353-2362 crossref(new window)
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