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High user capacity collaborative code-division multiple access

Presented is a novel collaborative communication scheme for code-division multiple access to increase user capacity well beyond spreading sequence length. It is shown that it is possible to achieve this increase at a low complexity and high bit-error-rate performance, which is a major research challenge. This work is motivated by the increasing demand for high spectrum and power efficient wireless communication systems. It has led to the development of a practical wireless adder channel implementation and provided the foundation for new direction of research and future exploitations. Contact: Professor G. Markarian, Tel: 01524 510394, Email: g.markarian@lancaster.ac.uk.