Coding for a multiple-access frequency-hopping system
Abstract
In the presently examined case of a digital transmission multiuser system using on-off FSK modulation with frequency hopping, the receiver consists of a bank of bandpass noncoherent detectors followed by a message decoder. A transmission channel characterized by Rayleigh fading and additive Gaussian noise is analyzed, and the effect of applying error correction codes to a system with a 32 kbits/sec per user is evaluated. Reed-Solomon codes can be used to generate both user identification and message coding, and convolutional codes are shown to be even more effective.
- Publication:
-
NASA STI/Recon Technical Report A
- Pub Date:
- May 1984
- Bibcode:
- 1984STIA...8436781E
- Keywords:
-
- Code Division Multiple Access;
- Data Transmission;
- Error Correcting Codes;
- Frequency Hopping;
- Frequency Shift Keying;
- Signal Encoding;
- Channel Noise;
- Digital Systems;
- Error Analysis;
- Probability Theory;
- Random Noise;
- Signal Fading;
- Transmission Efficiency;
- Communications and Radar