Coding apparatus and method in a CDMA mobile communication system

摘要

In a mobile communication system, a coding apparatus receives 5 information bits and generates a code symbol stream comprised of 20 coded symbols. The coding apparatus generates 5 coded symbol streams having a length 32 by encoding the 5 individual information bits with different Walsh codes having a length 32, and generates a coded symbol stream comprised of 32 coded symbols by XORing the 5 coded symbol streams in a symbol unit. Further, the coding apparatus generates a code symbol stream comprised of 20 coded symbols by puncturing 2^nd, 4^th, 5^th, 6^th, 8^th, 9^th, 10^th, 11^th, 12^th, 13^th, 14^th, and 30^th coded symbols among the 32 coded symbols.