On Galois-Division Multiple Access Systems: Figures of Merit and Performance Evaluation

"A new approach to multiple access based on finite field transforms is investigated. These schemes, termed Galois-Division Multiple Access (GDMA), offer compact bandwidth requirements. A new digital transform, the Finite Field Hartley Transform (FFHT) requires to deal with fields of characteristic p, p≠2. A binary-to-p-ary (p≠2) mapping based on the opportunistic secondary channel is introduced. This allows the use of GDMA in conjunction with available digital systems. The performance of GDMA is also evaluated. Key-words: Digital Multiplex, Spread Spectrum, Finite Field Transforms, Opportunistic Secondary Channel. 1."