US Patent No. 9,049,084

UTILIZING AN OFFSET QPSK SIGNAL TO TRANSMIT TWO DIGITAL SYMBOLS


Patent No. 9,049,084
Issue Date June 02, 2015
Title Utilizing An Offset Qpsk Signal To Transmit Two Digital Symbols
Inventorship Warren Bruce Cope, Olathe, KS (US)
Assignee Sprint Communications Company L.P., Overland Park, KS (US)

Claim of US Patent No. 9,049,084

8. A method for facilitating transmission of offset quadrature phase-shift keying (QPSK) signals indicating two digital symbols,
the method comprising:
using a first two-bit portion of a first eight-bit binary value to identify an initial amplitude associated with a sine wave
and an initial amplitude associated with a cosine wave;

using a second two-bit portion of a second eight-bit binary value to
A) identify a first offset amplitude associated with the sine wave, the first offset amplitude corresponding to a sum of the
initial amplitude associated with the sine wave and a first offset value associated with the second two-bit portion, and

B) identify a second offset amplitude associated with the cosine wave, the second offset amplitude corresponding to a sum
of the initial amplitude associated with the cosine wave and a second offset value associated with the second two-bit portion;
and

generating an offset QPSK signal based on the first offset amplitude associated with the sine wave and the second offset amplitude
associated with the cosine wave, the offset QPSK signal indicating the first two-bit portion and the second two-bit portion
concurrently.