In extra-large multiple-input multiple-output (XL-MIMO) systems, near-field users experience spherical wavefront propagation, offering higher spatial resolution than far-field plane-wave models, but complicating signal detection and interference cancellation. Under line-of-sight conditions, we propose a weighted-rate successive interference cancellation (WR-SIC) scheme whose ordering metric exploits the enhanced spatial degrees of freedom of near-field propagation to prioritize users with stronger channels. An iterative detection and decoding (IDD) scheme with LDPC coding is then developed. Simulations in hybrid near- and far-field deployments show that the proposed WR-SIC and IDD schemes improve bit-error and sum rates over existing schemes

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