Systems and methods for enhancing spectral efficiency in a communication network

摘要

A communication system configured to enhance communication spectral efficiency while maintaining an acceptable level of system robustness. Various combinations of modulation, code rate, and antenna usage scheme, are combined to create a hierarchy of modulation and communication schemes (MCS), such that each higher MCS level represents an enhanced degree of spectral efficiency, traded off for a lowered degree of system robustness. Included also are embodiments of methods testing the quality of data transmission and reception at difference MCS levels, and then raising or lowering MCS levels in order to enhance communication spectral efficiency while not falling below the minimally acceptable level of system robustness.

主权项

1. A method for calibrating modulation and coding schemes in a communication system, comprising:
transmitting, by a transmitter, to a receiver, a short transmission using a first modulation and coding scheme that is two levels above a recently used modulation and coding scheme known to have produced stable communication between said transmitter and said receiver; determining that there are substantially no errors associated with reception of the short transmission by the receiver, thereby supporting a decision to increase modulation and coding scheme of following transmissions above the recently used modulation and coding scheme known to have produced stable communication between said transmitter and said receiver; and transmitting, by the transmitter, to the receiver, a long transmission having a second modulation and coding scheme that is only one level above the recently used modulation and coding scheme known to have produced stable communication between said transmitter and receiver, thereby statistically facilitating a substantially error-free reception of the long transmission by the receiver.