Half rate coded modulation schemes for Rayleigh fading channels

Details Half rate coded modulation schemes for Rayleigh fading channels Half rate coded modulation schemes for Rayleigh fading channels

1998-03-10

2000-02-29

Williams, Howard L.

Coded data generation or conversion

Digital code to digital code converters

Coding by table look-up techniques

375263, 714759, H03M 700

Patent

active

060314745

ABSTRACT:
A novel code and method of code construction is disclosed. The disclosed code is a half rate block code designed to function optimally in a Raleigh fading channel. The disclosed code and method may be implemented in an 8-ARY QPSK modulation system. An alternative embodiment is a code and method of code construction for use in a 16-ARY QPSK modulation system. Both codes are systematic and use four symbols to represent two symbols. The first two symbols of the code are the information symbols. The second two symbols are parity symbols. The parity symbols are selected to provide maximum Euclidean distance between code words.

REFERENCES:
patent: 5311547 (1994-05-01), Wei
patent: 5448592 (1995-09-01), Williams et al.
patent: 5659578 (1997-08-01), Alamouti et al.
patent: 5784417 (1998-07-01), Alamouti

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