Multi-Pilot Channel Estimation for Orthogonal Time-Frequency Space Systems Based on Constant-Amplitude Zero-Autocorrelation Sequences.

ABSTRACT: Future communication systems must support high-speed mobile scenarios, while the mainstream Orthogonal Frequency Division Multiplexing (OFDM) technology faces severe inter-carrier interference in such environments. Therefore, the adoption of Orthogonal Time-Frequency Space (OTFS) modulation in 6G systems is an effective solution. The widely used single-pilot channel estimation in OTFS systems is susceptible to path loss and inaccurate fading coefficient estimation, leading to reduced estimation accuracy, signal distortion, and degraded overall system communication quality. To address this problem, this paper proposes a Constant-Amplitude Zero-Autocorrelation (CAZAC) sequence-based multi-pilot OTFS channel estimation scheme. The proposed method inserts multiple low-power pilots in the delay

SUBMITTER: Ju R 

PROVIDER: S-EPMC11644482 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature