Title :
Interleaved 5B20 code for insertion of carrier and clock pilots in 64-QAM systems
Author :
Hyun, S.-K. ; Kim, Jae-Kuk
Author_Institution :
Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol., Seoul, South Korea
Abstract :
An interleaved 5-binary to 2-octonary (5B20) block code is proposed to insert carrier and clock pilots in 64-QAM systems with a spectrum efficiency of about 4.5 bit/s/Hz. Its design is based on the rotated and scaled 64-QAM signal constellation. The spectral components of symbol sequences from this encoder are completely suppressed at DC and at the Nyquist frequency (NF).
Keywords :
amplitude modulation; codes; digital communication systems; encoding; 64-QAM systems; carrier signal; clock pilots; encoder; interleaved 5B20 code;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19911022
