Publications [#384660] of Robert Calderbank

Conference articles PUBLISHED

1. Pllaha, T; Tirkkonen, O; Calderbank, R, Reconstruction of Multi-user Binary Subspace Chirps, IEEE International Symposium on Information Theory Proceedings, vol. 2020-June (June, 2020), pp. 531-536 [doi]
   (last updated on 2026/01/17)

   Abstract:
   We consider codebooks of Complex Grassmannian Lines consisting of Binary Subspace Chirps (BSSCs) in N =2^m dimensions. BSSCs are generalizations of Binary Chirps (BCs), their entries are either fourth-roots of unity, or zero. BSSCs consist of a BC in a non-zero subspace, described by an on-off pattern. Exploring the underlying binary symplectic geometry, we provide a unified framework for BSSC reconstruction - both onoff pattern and BC identification are related to stabilizer states of the underlying Heisenberg-Weyl algebra. In a multi-user random access scenario we show feasibility of reliable reconstruction of multiple simultaneously transmitted BSSCs with low complexity.