Efficient learning algorithm for channel estimation in wireless communication systems

A wireless channel estimating apparatus in a wireless communication system, for improving a throughput of the wireless communication system by estimating a wireless channel for the wireless communication system to equalize slots of the wireless channel to compensate channel effects, the apparatus comprising:

• a memory configured to store a plurality of instructions;
• processor circuitry coupled to the memory and configured to execute the plurality of instructions to:
• determine a value of β from a finite set of discrete values ranging from 0 to 1 to be used for channel estimation in a slot number N based on time-selectivity of a channel corresponding to the slot number N;
• estimate the channel according to reference signal symbols received in the slot number N;
• determine a transmit power level in a slot number N−1;
• determine a transmit power level in the slot number N;
• determine a power offset ratio according to the ratio of transmit power level in the slot number N−1 to the transmit power of the slot number N;
• identify filtered channel coefficients in the slot number N−1;
• compute in real time filtered channel coefficients in the slot number N according to a determined set of values β applied to generate a subset of equalized Quadrature Amplitude Modulated (QAM) symbols in the slot number N, the estimated channel according to reference signal symbols received in the slot number N, the determined power offset, and the filtered coefficients in the slot number N−1;
• and
• decoding a payload for every iteration based on the equalized QAM symbols.

A wireless channel estimating system, in a wireless communication system, for improving a throughput of the wireless communication system by estimating a wireless channel for the wireless communication system to equalize slots of the wireless channel to compensate channel effects, the wireless channel estimating system comprising:

• a transmitter configured to transmit at least one reference signal and a plurality of Quadrature Amplitude Modulated (QAM) data symbols:
• a receiver configured to:
• receive the at least one reference signal and the plurality of QAM data symbols;
• determine a value of β from a finite set of discrete values ranging from 0 to 1 to be used for channel estimation in a slot number N based on time-selectivity of a channel corresponding to the slot number N;
• estimate the channel according to the at least one reference signal symbols received in the slot number N;
• determine a transmit power level in a slot number N−1;
• determine a transmit power level in the slot number N;
• determine a power offset ratio between the transmit power in slot number N−1 and the transmit power in slot number N;
• identify filtered channel coefficients in the slot number N−1;
• compute in real time filtered channel coefficients for the slot number N according to a determined set of values β applied to generate a subset of equalized QAM symbols in the slot number N, the estimated channel according to reference signal symbols received in the slot number N, the determined power offset, and the filtered coefficients in the slot number N−1;
• and
• decoding a payload for every iteration based on the equalized QAM symbols.