ps3.e.7. all-optical fo-cdma network
... To overcome this problem of one dimensional codes in FOCDMA, several types of encoding of the CDMA sequences such as frequency-hopping (FH), time-space (T/S) and W/T have been proposed. FH codes2 are not suitable for FOCDMA3, as systems using Frequency-Encoding CDMA technique suffer from optical bea ...
... To overcome this problem of one dimensional codes in FOCDMA, several types of encoding of the CDMA sequences such as frequency-hopping (FH), time-space (T/S) and W/T have been proposed. FH codes2 are not suitable for FOCDMA3, as systems using Frequency-Encoding CDMA technique suffer from optical bea ...
Gray code
The reflected binary code, also known as Gray code after Frank Gray, is a binary numeral system where two successive values differ in only one bit (binary digit).The reflected binary code was originally designed to prevent spurious output from electromechanical switches. Today, Gray codes are widely used to facilitate error correction in digital communications such as digital terrestrial television and some cable TV systems.