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<p>This paper deals with joint carrier frequency offset (CFO) and direction of arrival (DOA) estimation for the interleaved orthogonal frequency division multiple access (OFDMA)/space division multiple access (SDMA) uplink systems that equipped with small-scale arrays. This hybrid scheme, based on the decomposition of the two-dimensional parameter finding into double one-dimensional parameter finding, uses the ESPRIT method to estimate the CFO and the root-MUSIC method for the DOA estimation. Specially, for each user, after the CFO estimation from the ESPRIT method, its DOA can be obtained simultaneously via polynomial rooting. Several simulation results are presented to verify the efficiency of this hybrid scheme.</p>

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Joint CFO and DOA Estimation Using Hybrid ESPRIT and Root-MUSIC Scheme for Interleaved OFDMA/SDMA Uplink

  • 期刊论文

  • 发表日期：

    2025年12月29日

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  • Chih-Chang Shen,
  • Wei Jhang

摘要

This paper deals with joint carrier frequency offset (CFO) and direction of arrival (DOA) estimation for the interleaved orthogonal frequency division multiple access (OFDMA)/space division multiple access (SDMA) uplink systems that equipped with small-scale arrays. This hybrid scheme, based on the decomposition of the two-dimensional parameter finding into double one-dimensional parameter finding, uses the ESPRIT method to estimate the CFO and the root-MUSIC method for the DOA estimation. Specially, for each user, after the CFO estimation from the ESPRIT method, its DOA can be obtained simultaneously via polynomial rooting. Several simulation results are presented to verify the efficiency of this hybrid scheme.