Noncoherent OFDM Transmission via Off-the-Grid Joint Channel and Data Estimation
Noncoherent OFDM Transmission via Off-the-Grid Joint Channel and Data Estimation
复制标题
通过离网联合信道和数据估计的非相干 OFDM 传输
DOI:
10.1109/lwc.2022.3218187
复制
发表时间:
2023
影响因子:
6.3
通讯作者:
Bigdeli M
中科院分区:
文献类型:
--
作者:
Bigdeli M
Pilot-aided channel estimation techniques are known to waste the spectral bandwidth. An off-the-grid blind estimator for time-variant orthogonal frequency division multiplexing (OFDM) systems is studied in this letter. In this regard, we propose a blind estimator based on atomic norm minimization (ANM) for OFDM systems. To do so, at the first transmission block, using a lifted ANM (LANM) and simple constraint onnorm of data, we simultaneously estimate the channel and data. For the subsequent blocks, we use a penalized ANM (PANM) to simultaneously track the channel’s parameters and detect transmit signals. The proposed problems require an infinite dimensional search, hence are NP-hard. Therefore, we propose two semidefinite programs (SDPs) to implement them. We then derive the total computational complexity of the proposed estimator. The simulation results show the superiority of the proposed estimator to the state-of-the-arts.
影响因子:
6.8
作者:
R. Lin;A. Petropulu
通讯作者:
R. Lin;A. Petropulu
影响因子:
6.3
作者:
Lixia Xiao;Guanghua Liu;P. Xiao;Tao Jiang
通讯作者:
Tao Jiang