Soft repetition code combiner using channel state information

An apparatus comprising:

• a channel estimator to provide a channel estimate;
• a multiplier coupled to the channel estimator to multiply a quantized output of a demodulator with the channel estimate to produce N symbols of a signal corresponding to a carrier;
• a de-interleaver coupled to the multiplier to de-interleave the N symbols;
• and
• an averager coupled to the de-interleaver to average the N de-interleaved symbols to generate a channel response at a carrier.

A method comprising:

• generating a tone value representing channel information;
• quantizing the tone value;
• combining de-interleaved symbols weighed by the quantized tone value;
• and
• comparing the combined de-interleaved symbols with a threshold to generate a decoding decision.

A method comprising:

• providing a channel estimate;
• multiplying a quantized output of a demodulator with the channel estimate to produce N symbols of a signal corresponding to a carrier;
• de-interleaving the N symbols;
• and
• averaging the N de-interleaved symbols, the averaged N de-interleaved symbols representing a channel response at a carrier.

A system comprising:

• a demodulator to demodulate a signal received from a power line;
• and
• a decoder coupled to the demodulator to decode the demodulated signal, the decoder comprising:
• a channel state estimator to generate a tone value representing channel information,
• a quantizer coupled to the channel state estimator to quantize the tone value,
• a combiner coupled to the quantizer to combine de-interleaved symbols weighed by the quantized tone value, and
• a comparator coupled to the combiner to compare the combined de-interleaved symbols with a threshold to generate a decoding decision.

A system comprising:

• a demodulator to demodulate a signal received from a power line;
• and
• a decoder coupled to the demodulator to decode the demodulated signal, the decoder comprising:
• a channel estimator to provide a channel estimate,
• a multiplier coupled to the channel estimator to multiply a quantized output of the demodulator with the channel estimate to produce N symbols of a signal corresponding to a carrier,
• a de-interleaver coupled to the multiplier to de-interleave the N symbols, and
• an averager coupled to the de-interleaver to average the N de-interleaved symbols to generate a channel response at a carrier.