CDMA code generator employing mixing ergodic transformation

Details CDMA code generator employing mixing ergodic transformation CDMA code generator employing mixing ergodic transformation

1996-06-03

1998-03-10

Sotomayor, John B.

Communications: directive radio wave systems and devices (e.g.,

With particular circuit

For pulse modulation

342189, 375200, G01S 7292

Patent

active

057266581

ABSTRACT:
A codeword generator produces codewords in the form of digital electronic signals which may be employed, for example, in spread spectrum communications system or RADAR systems. The generator effects a mixing ergodic transformation upon a suitable irrational number to produce a complex number sequence. The generator truncates the complex number sequence to a predetermined length, thus forming a codeword. The generator then forms other codewords within a family by permuting this first codeword. Other families of codewords may be generated by employing another mixing ergodic transform to transform the same irrational number or another suitable irrational number.

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patent: 5511009 (1996-04-01), Pastor
Pickholtz et al., "Theory of Spread Spectrum Communications--A Tutorial", IEEE Transactions On Communications, vol. Com. 30, No. 5, May 1982, pp. 855-884.
Cornfeld et al., "Ergodic Theory", Springer-Verlag, 1982, pp. 3-137.
Borwein and Borwein, ".pi. and the AGM", Wiley Interscience, 1978, pp. 1-61, 219-229.
Acton, "Numerical Methods That Work", Harper and Row, 1970, pp. 178-203.

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