Apparatus and method for improved modulation and coding schemes for broadband satellite communications systems

摘要

Modulation and coding schemes are provided for improved performance of wireless communications systems to support services and applications for terminals with operational requirements at relatively low E s / N 0 ratios. The provided modulation and coding schemes will support current and future communications services and applications for terminals with operational requirements at relatively low E s / N 0 ratios, and will provide modulation and coding schemes that offer finer granularity within an intermediate operational range of E s / N 0 ratios. The new modulation and coding schemes provide new BCH codes, and low density parity check (LDPC) codes with code length n ldpc = 32400 and code rates 1/5, 11/45 and 1/3.