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- W4312373013 abstract "In cognitive radio (CR) networks with non-continuous carriers, designing spectrally-null-constrained (SNC) sequences with good correlation properties is an important research task. In this letter, two types of SNC sequences with zero correlation zone (ZCZ) property are considered: single-channel SNC-ZCZ sequences and multi-channel SNC-Z-periodic complementary sequences (SNC-ZPCSs), which have potential applications for CR-multiple-input multiple-output (MIMO) channel estimation and CR-quasi-synchronization communications to achieve interference-free performance. The resultant SNC-ZCZ sequence sets are optimal with respect to the theoretical bound and the spectral-null constraint can be set flexibly. Simulation results demonstrate that such sequences are suitable for pilot design in CR-MIMO-orthogonal frequency division multiplexing (OFDM) system. Besides, a construction of multi-channel SNC-ZPCS sets was provided based on single-channel SNC-ZCZ sequence sets." @default.
- W4312373013 created "2023-01-04" @default.
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- W4312373013 date "2023-02-01" @default.
- W4312373013 modified "2023-10-17" @default.
- W4312373013 title "Spectrally-Null-Constrained ZCZ Sequences for MIMO-OFDM Channel Estimation Over Non-Contiguous Carriers" @default.
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- W4312373013 doi "https://doi.org/10.1109/lcomm.2022.3229469" @default.
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