Patent ID: 7808954
Filing Date: 2010-10-05
Classification: H04L

Abstract:
1. A system for controlling a data rate in a communication system, comprising: a transmitter for setting threshold values for classifying Modulation and Coding Scheme (MCS) levels, setting an MCS level to be actually used in a receiver when receiving information about an MCS level desired to be used in the receiver, and transmitting information about the set MCS level to the receiver; and the receiver for computing an instantaneous link capacity using a channel estimation result when detecting that the information about the MCS level desired to be used in the receiver is to be transmitted to the transmitter, setting an MCS level mapped to the instantaneous link capacity, transmitting information about the set MCS level to the transmitter, and receiving the information about the MCS level to be used in the receiver from the transmitter, wherein the instantaneous link capacity is determined by where C(t) is the instantaneous link capacity, N is the number of transmit antennas used in the transmitter, H(t) is a time-variant channel, H(t) where σ 2 is a variance value of a noise signal added to the receiver.