US 12,004,164 B2
NLOS wireless backhaul downlink communication
June Chul Roh, Allen, TX (US); Pierre Bertrand, Antibes (FR); Srinath Hosur, Plano, TX (US); Vijay Pothukuchi, Allen, TX (US); and Mohamed Farouk Mansour, Richardson, TX (US)
Assigned to TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)
Filed by TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)
Filed on Mar. 6, 2023, as Appl. No. 18/118,019.
Application 18/118,019 is a continuation of application No. 17/135,393, filed on Dec. 28, 2020, granted, now 11,601,924.
Application 17/135,393 is a continuation of application No. 16/408,590, filed on May 10, 2019, granted, now 10,880,875, issued on Dec. 29, 2020.
Application 16/408,590 is a continuation of application No. 14/297,145, filed on Jun. 5, 2014, granted, now 10,334,569, issued on Jun. 25, 2019.
Claims priority of provisional application 61/831,214, filed on Jun. 5, 2013.
Claims priority of provisional application 61/831,229, filed on Jun. 5, 2013.
Claims priority of provisional application 61/831,217, filed on Jun. 5, 2013.
Prior Publication US 2023/0284226 A1, Sep. 7, 2023
Int. Cl. H04W 72/21 (2023.01); H03M 13/00 (2006.01); H03M 13/15 (2006.01); H03M 13/29 (2006.01); H04L 1/00 (2006.01); H04L 1/1812 (2023.01); H04H 20/38 (2008.01); H04W 72/0446 (2023.01)
CPC H04W 72/21 (2023.01) [H03M 13/1515 (2013.01); H03M 13/2966 (2013.01); H03M 13/611 (2013.01); H04L 1/0041 (2013.01); H04L 1/0057 (2013.01); H04L 1/0061 (2013.01); H04L 1/0064 (2013.01); H04L 1/0071 (2013.01); H04L 1/0076 (2013.01); H04L 1/1812 (2013.01); H03M 13/618 (2013.01); H03M 13/635 (2013.01); H04H 20/38 (2013.01); H04W 72/0446 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A wireless backhaul communication system, comprising:
a transmitter comprising:
a Reed Solomon (RS) encoder configured to perform RS encoding on a downlink (DL) data bit stream to generate a plurality of RS codewords;
a byte interleaver coupled to the RS encoder and configured to perform byte interleaving across the plurality of RS codewords;
a Turbo encoder coupled to the byte interleaver and configured to perform Turbo encoding on the interleaved RS codewords to generate one or more Turbo codewords, wherein each Turbo codeword is encoded from multiple RS codewords;
a symbol mapper coupled to the Turbo encoder and configured to modulate and Discrete Fourier Transform (DFT) precode the Turbo codewords, a transmission control frame, and a broadcast frame separately, wherein the broadcast frame comprises a transmission schedule for a plurality of wireless backhaul remote units; and
a sub-carrier mapper coupled to the symbol mapper and configured to generate a first digital radio frame comprising a plurality of symbols in time and a plurality of sub-carriers in a system bandwidth, wherein to generate the first digital radio frame, the sub-carrier mapper is to:
map the DFT precoded broadcast frame onto a first set of the sub-carriers centered about a direct current (DC) sub-carrier, wherein the first set of sub-carriers comprises a fixed number of consecutive sub-carriers regardless of the system bandwidth;
map the DFT precoded transmission control frame onto a second set of the sub-carriers near a lower frequency edge and near a higher frequency edge of the system bandwidth; and
map the DFT precoded Turbo codewords onto frequency sub-carriers different than the first set of sub-carriers and the second set of sub-carriers; and
a radio front end comprising an antenna and coupled to the transmitter, wherein the radio front end is configured to convert the first digital radio frame to a first analog signal and transmit the first analog signal via the antenna.