Binary signatures are constructed for M+N users in N-dimensional signal space. Proposed signatures preserve the minimum Euclidean distance between signals inherent in an N-dimensional orthogonal signal set. They are easily generated with Hadamard matrices, and they can be applied in oversaturated synchronous CDMA systems.
References
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Paavola, J., Ipatov, V.: `Oversaturating synchronous CDMA systems on the signature per user basis', Proc. 5th European Personal Mobile Communications Conf., April 2003, Glasgow, Scotland, UK, to appear.
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Vector assignment scheme for M+N users in N-dimensional global additive channel.
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J.A.F. Ross ,
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http://iet.metastore.ingenta.com/content/journals/10.1049/el_20030472
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