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US 7,542,736 B2Granted
Techniques to decrease signal amplitude peak-to-average ratio in a wireless communications system
AssigneeM/A-Com, Inc.
InventorMohsen Sarraf
Life of this patent
Estimating the term…
Abstract
Techniques to reduce signal amplitude peak-to-average ratio (PAR) in a wireless communications system are described. The apparatus may include a signal conditioning module to receive a baseband signal. The signal conditioning module may split the baseband signal along multiple paths, delay one or more of the paths, and combine the multiple paths to form a conditioned signal having lower signal amplitude PAR than the baseband signal. Other embodiments are described and claimed.
Claims22
An apparatus, comprising:
- a signal conditioning module to receive a baseband signal, said signal conditioning module comprising:
- multiple parallel paths for splitting said baseband signal, the multiple parallel paths comprise n paths having gain factors α1, . . . ,αn, where α1+α2+ . . . +αn =1 and n comprises a positive integer value, the multiple parallel paths comprising a first path wherein the baseband signal is provided directly to an amplifier;
- a delay block for delaying each of the subsequent multiple parallel paths;
- and
- a combiner block to combine said multiple parallel paths to form a conditioned signal having a lower signal amplitude peak-to-average ratio than said baseband signal.
2 more elements
A system, comprising:
- an antenna;
- and
- a transmitter node to couple to said antenna, said transmitter node comprising:
- a signal conditioning module to receive a baseband signal, said signal conditioning module comprising:
- multiple parallel paths for splitting said baseband signal, the multiple parallel paths comprise n paths having gain factors α1, . . . ,αn, where α1+α2+ . . . +αn =1 and n comprises a positive integer value, the multiple parallel paths comprising a first path wherein the baseband signal is provided directly to an amplifier;
- a delay block for delaying each of the subsequent multiple parallel paths;
- and
- a combiner block to combine said multiple parallel paths to form a conditioned signal having a lower signal amplitude peak-to-average ratio than said baseband signal.
5 more elements
A method, comprising:
- receiving a baseband signal at a signal conditioning module;
- splitting said baseband signal along multiple parallel paths, the multiple parallel paths comprise n paths having gain factors α1, . . . ,αn, where α1+α2+ . . . +αn =1 and n comprises a positive integer value;
- providing said baseband signal along a first path directly to an amplifier;
- delaying each of the subsequent multiple parallel paths;
- and
- combining said multiple parallel paths to form a conditioned signal having a lower signal amplitude peak-to-average ratio than said baseband signal.
3 more elements
Dependencies are inferred from the claim text.