US 9,813,136 B2
System and method for mapping symbols for MIMO transmission
Mahmoud Taherzadehboroujeni, Kitchener (CA); Hosein Nikopour, Kitchener (CA); Amir Khandani, Kitchener (CA); Wen Tong, Ottawa (CA); Ming Jia, Ottawa (CA); Peiying Zhu, Kanata (CA); Dong-Sheng Yu, Ottawa (CA); and Jianglei Ma, Kanata (CA)
Assigned to APPLE INC., Cupertino, CA (US)
Filed by APPLE INC., Cupertino, CA (US)
Filed on Nov. 21, 2016, as Appl. No. 15/357,552.
Application 15/357,552 is a continuation of application No. 14/077,511, filed on Nov. 12, 2013, granted, now 9,509,384.
Application 14/077,511 is a continuation of application No. 11/631,842, granted, now 8,588,326, issued on Nov. 19, 2013, previously published as PCT/CA2005/001057, filed on Jul. 7, 2005.
Claims priority of provisional application 60/601,178, filed on Aug. 13, 2004.
Claims priority of provisional application 60/585,583, filed on Jul. 7, 2004.
Prior Publication US 2017/0126301 A1, May 4, 2017
Int. Cl. H04B 7/24 (2006.01); H04B 7/00 (2006.01); H04L 27/00 (2006.01); H04L 27/04 (2006.01); H04B 7/06 (2006.01); H04B 7/0413 (2017.01)
CPC H04B 7/0669 (2013.01) [H04B 7/0413 (2013.01); H04B 7/0697 (2013.01)] 20 Claims
OG exemplary drawing
 
15. A device, comprising:
four antennas;
communication circuitry; and
processing hardware coupled to the four antennas and the communication circuitry, wherein the processing hardware is configured to operate with the four antennas and the communication circuitry to:
pre-code information bits to generate four transmit symbols, wherein the pre-coding comprises generating the four transmit symbols by mapping M information bits as two sets of M/2 bits, wherein the first set of M/2 bits is mapped on a first and a third mapping constellation to produce first and third transmit symbols, wherein the third mapping constellation is a different permutation mapping of the first set of M/2 bits;
encode two of the transmit symbols into a first matrix and encode another two of the transmit symbols into a second matrix;
transmit the two matrices on the four antennas over four time intervals or four frequencies by:
transmitting the first matrix on two antennas during two of the four time intervals or at two of the four frequencies;
transmitting the second matrix on the other two antennas during the other two of the four time intervals or at the other two of the four frequencies; wherein the pre-code and encode occur such that all of the information bits are represented in what is transmitted from each of the four antennas.