A variable length feedback scheme for binary constant antipodal signals with an upper bound on the decision time is proposed. In addition to the noiseless decision feedback channel a noiseless information feedback channel is used for energy saving. The performance of the scheme is derived, and the probability of error as a function of the average energy per symbol is compared to existing systems. Two of the existing systems may be obtained as limiting cases of the combined scheme considered here.
ASJC Scopus subject areas
- Electrical and Electronic Engineering