TY - GEN
T1 - Digital Harmonic Interference Cancellation between LTE and 5G NR in Terminal
AU - Xu, Haixiang
AU - Jin, Lin
AU - Zhang, Mingyang
AU - Xing, Zhifang
AU - Zhang, Zhongshan
N1 - Publisher Copyright:
© 2019 IEEE.
PY - 2019/12
Y1 - 2019/12
N2 - As a typical heterogeneous network, the fifth generation (5G) mobile communication system must be compatible with existing technologies (such as Long-Term Evolution (LTE)) and support multiple types of 5G New Radio (5G NR). When multiple air interface technologies coexist, mutual interference will inevitably occur between different working frequency bands (for the same device, we call this interference 'self-interference (SI)'). In this paper, for the typical SI of harmonic interference, we propose a new digital-domain interference cancellation method, which can be widely applied to 5G mobile communication systems. By making Band3 (B3) and New Radio78 (n78) work simultaneously, the proposed new method can eliminate the 2nd harmonic generated by the power amplifier (PA) in n78's receiving link. Furthermore, in order to improve the accuracy of nonlinear harmonic components in wideband systems, an equivalent frequency-domain analysis model of harmonic signals is established, following which an iterative channel estimation technique can be employed for improving the accuracy of the proposed scheme. Numerical results demonstrate that the proposed scheme is capable of achieving a high-precision harmonic SI cancellation.
AB - As a typical heterogeneous network, the fifth generation (5G) mobile communication system must be compatible with existing technologies (such as Long-Term Evolution (LTE)) and support multiple types of 5G New Radio (5G NR). When multiple air interface technologies coexist, mutual interference will inevitably occur between different working frequency bands (for the same device, we call this interference 'self-interference (SI)'). In this paper, for the typical SI of harmonic interference, we propose a new digital-domain interference cancellation method, which can be widely applied to 5G mobile communication systems. By making Band3 (B3) and New Radio78 (n78) work simultaneously, the proposed new method can eliminate the 2nd harmonic generated by the power amplifier (PA) in n78's receiving link. Furthermore, in order to improve the accuracy of nonlinear harmonic components in wideband systems, an equivalent frequency-domain analysis model of harmonic signals is established, following which an iterative channel estimation technique can be employed for improving the accuracy of the proposed scheme. Numerical results demonstrate that the proposed scheme is capable of achieving a high-precision harmonic SI cancellation.
KW - New Radio (NR)
KW - digital domain
KW - iterative estimation
KW - self-interference (SI) cancellation
KW - the fifth generation(5G)
UR - http://www.scopus.com/inward/record.url?scp=85084061077&partnerID=8YFLogxK
U2 - 10.1109/ICCC47050.2019.9064196
DO - 10.1109/ICCC47050.2019.9064196
M3 - Conference contribution
AN - SCOPUS:85084061077
T3 - 2019 IEEE 5th International Conference on Computer and Communications, ICCC 2019
SP - 1011
EP - 1015
BT - 2019 IEEE 5th International Conference on Computer and Communications, ICCC 2019
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 5th IEEE International Conference on Computer and Communications, ICCC 2019
Y2 - 6 December 2019 through 9 December 2019
ER -