Patent ID: 7725084
Filing Date: 2010-05-25
Classification: H04B,H04L

Abstract:
1. An apparatus comprising: a first mapper configured to receive first representations of a first portion of communication data, said first mapper configured to map the first representations of the first portion of the communication data into first mapped values according to a first mapping scheme; and a second mapper configured to receive second representations of a second portion of the communication data, said second mapper configured to map the second representations of the communication data into second mapped values according to a second mapping scheme, the second mapping scheme exhibiting a mapping property that differs with the first mapping scheme, wherein the first mapper is configured to direct transmission of the first mapped values to a first antenna transducer among a plurality of antenna transducers and wherein the second mapper is configured to direct transmission of the second mapped values to a second antenna transducer among the plurality of antenna transducers, the first and second antenna transducers configured to receive and transduce only the first mapped values and the second mapped values, respectively, into electromagnetic form for communication upon a communication channel, and wherein the apparatus is configured to define a code comprising a plurality of layers defined over the first antenna transducer and the second antenna transducer, and wherein the apparatus is configured to form a composite code from each of the layers of the code, and wherein a second layer of the code comprises a concatenated space time block code (STBC) formed by spherical modulation, wherein at least the first mapper is configured to perform the spherical modulation.