05 Aug 2008
05 Aug 2008
Polyphase alternating codes
M. Markkanen1, J. Vierinen2, and J. Markkanen3
M. Markkanen et al.
M. Markkanen1, J. Vierinen2, and J. Markkanen3
- 1Eigenor Corporation, Lompolontie 1, 99600 Sodanykylä, Finland
- 2Sodankylä Geophysical Obervatory, Tähteläntie 62, 99600 Sodankylä, Finland
- 3EISCAT Scientific Association, Tähteläntie 54B, 99600 Sodankylä, Finland
- 1Eigenor Corporation, Lompolontie 1, 99600 Sodanykylä, Finland
- 2Sodankylä Geophysical Obervatory, Tähteläntie 62, 99600 Sodankylä, Finland
- 3EISCAT Scientific Association, Tähteläntie 54B, 99600 Sodankylä, Finland
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Abstract. We present a new class of alternating codes. Instead of the customary binary phase codes, the new codes utilize either p or p–1 phases, where p is a prime number. The first class of codes has code length pm, where m is a positive integer, the second class has code length p–1. We give an actual construction algorithm, and explain the principles behind it. We handle a few specific examples in detail. The new codes offer an enlarged collection of code lengths for radar experiments.
