Patent ID: 9485127
Filing Date: 2016-11-01
CPC Classification: H04B,H04L,H04W

Claim Text:
1. A wireless transmitter comprising: a. a module configured to modulate input data bits into data symbols according to a predetermined modulation scheme, and group the data symbols into one or more precoding blocks; b. at least one symbol insertion module, each configured to insert one or more cancellation symbols into a corresponding precoding block; c. at least one precoding module, each configured to precode a corresponding precoding block; d. a subcarrier insertion modcule configured to concatenate the one or more precoded blocks and to insert at leat one cancellation subcarrier into the concatenated precoded blocks to form a precoded Orthogonal Frequency Division Multiplexing (OFDM) symbol; e. a module configured to process the precoded OFDM symbol so as to reduce the out-of-band power emitted by the transmitter in transmitting the precoded OFDM symbol, wherein the processing uses the inserted cancellation symbols and cancellation subcarriers; and f. a module configured to transmit the processed precoded OFDM symbol over a wireless communication channel.