Predictive clipping in multi-carrier wireless communication systems

A method of selectively clipping at least one signal prior to transmission in a multi-carrier wireless communication system, comprising:

• determining peak signal values for signals to be transmitted in the multi-carrier wireless communication system;
• and
• selectively clipping any signal wherein at least one peak signal value exceeds a local threshold and peak signal values for a sum of all signals to be transmitted exceed a global threshold;
• wherein the determining peak values and selectively clipping any signal occur independently of carrier frequencies of carriers in the multi-carrier wireless communication system.

An apparatus for selectively clipping waveforms prior to transmission in a multi-carrier wireless communication system, comprising:

• means for estimating peak values for signals to be transmitted over multiple carriers in the multi-carrier wireless communication system;
• means for determining a local threshold set comprising one local threshold for each carrier in the multi-carrier wireless communication system based on a configurable total threshold representing a maximum aggregate signal level for a sum of all signals to be transmitted over the multiple carriers in the multi-carrier wireless communication system;
• and
• means for clipping one signal to be transmitted over one carrier in the multi-carrier wireless communication system when the signal to be transmitted over the one carrier exceeds a corresponding local threshold and all signals to be transmitted over multiple carriers exceeds the total threshold;
• wherein the means for estimating peak values, means for determining the local threshold set, and means for clipping one signal operate independently of carrier frequencies of the multiple carriers.

An apparatus for selectively clipping at least one signal prior to transmission in a multi-carrier wireless communication system, comprising:

• means for determining peak signal values for signals to be transmitted in the multi-carrier wireless communication system;
• and
• means for selectively clipping any signal wherein at least one peak signal value exceeds a local threshold and peak signal values for a sum of all signals to be transmitted exceed a global threshold;
• wherein the means for determining peak signal values and means for selectively clipping any signal operate independently of carrier frequencies of carriers in the multi-carrier wireless communication system.

An apparatus for selectively clipping waveforms prior to transmission in a multi-carrier wireless communication system, comprising:

• a computing device configured to:
• estimate peak values for signals to he transmitted over multiple carriers in the multi-carrier wireless communication system and
• determine a local threshold set comprising one local threshold for each carrier in the multi-carrier wireless communication system based on a configurable total threshold representing a maximum aggregate signal level for a sum of all signals to be transmitted over the multiple carriers in the multi-carrier wireless communication system;
• and
• a clipping arrangement configured to clip one signal to be transmitted over one carrier in the multi-carrier wireless communication system when the signal to he transmitted over the one carrier exceeds a corresponding local threshold and all signals to be transmitted over multiple carriers exceeds the total threshold;
• wherein the computing device and the clipping arrangement operate independently of carrier frequencies of the multiple carriers.

An apparatus for selectively clipping at least one signal prior to transmission in a multi-carrier wireless communication system, comprising:

• a computing device configured to determine peak signal values for signals to be transmitted in the multi-carrier wireless communication system;
• and
• a clipping arrangement configured to selectively clip any signal wherein at least one peak signal value exceeds a local threshold and peak signal values for a sum of all signals to be transmitted exceed a global threshold;
• wherein the computing device and the clipping arrangement operate independently of carrier frequencies of carriers in the multi-carrier wireless communication system.

A non-transitory computer readable medium configured to execute a set of instructions that when executed perform a method of selectively clipping waveforms prior to transmission in a multi-carrier wireless communication system, the method comprising:

• estimating peak values for signals to be transmitted over multiple carriers in the multi-carrier wireless communication system;
• determining a local threshold set comprising one local threshold for each carrier in the multi-carrier wireless communication system based on a configurable total threshold representing a maximum aggregate signal level for a sum of all signals to be transmitted over the multiple carriers in the multi-carrier wireless communication system;
• and
• clipping one signal to be transmitted over one carrier in the multi-carrier wireless communication system when the signal to be transmitted over the one carrier exceeds a corresponding local threshold and all signals to be transmitted over multiple carriers exceeds the total threshold;
• wherein the estimating peak values, determining the local threshold set, and clipping one signal occur independently of carrier frequencies of the multiple carriers.

A non-transitory computer readable medium configured to execute a set of instructions that when executed perform a method of selectively clipping at least one signal prior to transmission in a multi-carrier wireless communication system, the method comprising:

• determining peak signal values for signals to be transmitted in the multi-carrier wireless communication system;
• and
• selectively clipping any signal wherein at least one peak signal value exceeds a local threshold and peak signal values for a sum of all signals to be transmitted exceed a global threshold;
• wherein the determining peak signal values and selectively clipping any signal occur independently of carrier frequencies of carriers in the multi-carrier wireless communication system.