In this paper, we first investigate the signal and interference characteristics of the windowed universal filtered multi-carrier (UFMC) system in presence of carrier frequency offset (CFO), and then derive the expression of subcarrier signal-to-interferenceplus-noise ratio (SINR). Based on the relationship between symbol error rate (SER) and SINR, an optimization model for window design is formulated to maximize the geometric mean of subcarrier SINR. The successive convex approximation (SCA) algorithm is then employed to solve the optimization problem and determine the optimal window. Finally, SER simulations with various window functions demonstrate that the windowed operations effectively reduce the UFMC interference caused by CFO. Moreover, compared with traditional window functions, the proposed optimal window function significantly improves the system SER, and behaves reliably across a wide signal to noise ratio range.
XIE Yu, WEN Jiangang, NI Zhengwei, HUA Jingyu
. Interference Analysis and Optimal Window Design for Windowed UFMC Systems[J]. Journal of Applied Sciences, 2025
, 43(2)
: 257
-273
.
DOI: 10.3969/j.issn.0255-8297.2025.02.006
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