Multiuser TOA Estimation Algorithm in DS-CDMA Sparse Channel for Radiolocation

Sunwoo KIM  

IEICE TRANSACTIONS on Communications   Vol.E91-B   No.2   pp.618-621
Publication Date: 2008/02/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e91-b.2.618
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
CDMA,  channel estimation,  radiolocation,  GSIC,  

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This letter considers multiuser time delay estimation in a sparse channel environment for radiolocation. The generalized successive interference cancellation (GSIC) algorithm is used to eliminate the multiple access interference (MAI). To adapt GSIC to sparse channels the alternating maximization (AM) algorithm is considered, and the continuous time delay of each path is estimated without requiring a priori known data sequences.