Evaluation of transmitter performance
AssigneeQUALCOMM Incorporated
InventorsFuyun Ling, Durk L. Van Veen, Murali Ramaswamy Chari, Thomas Sun
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Abstract
Systems and methodologies are described that facilitate monitoring transmitter performance in a wireless communication environment. A signal analyzer can be used to sample the output of a transmitter and the sampled signal can be propagated to a processor. The processor can generate frequency domain channel estimates for the subcarriers. If the transmitted modulation symbols are unknown, the processor can determine the modulation symbols and use the determined modulation symbols to calculate the channel estimates. The channel estimates can be averaged and used to generate various metrics to evaluate the transmitter performance.
Claims52
A method of evaluating transmitter performance for a wireless communication environment comprising:
- generating a frequency domain channel estimate for each of a plurality of subcarriers of a transmitter signal;
- determining an average frequency domain channel estimate for each of the plurality of subcarriers, wherein the average frequency domain channel estimate for a specific subcarrier comprises an average of the frequency domain channel estimate for the specific subcarrier over at least one subcarrier frame;
- and
- generating at least one metric indicative of transmitter performance based at least in part upon the average frequency domain channel estimate for each of the plurality of subcarriers.
An apparatus that facilitates evaluating transmitter performance in a wireless communication environment comprising:
- a signal analyzer that samples an RF signal from a transmitter;
- a processor that calculates a frequency domain channel estimate for each of a plurality of subcarriers for every symbol in a superframe of a transmitter signal, calculates the average of the frequency domain channel estimates for each of the plurality of subcarriers and generates at least one transmitter metric based at least in part upon the average frequency domain channel estimates;
- and
- a memory, coupled to the processor, that stores information related to the symbols;
- wherein calculating the average of the frequency domain channel estimates for a specific subcarrier comprises averaging the frequency domain channel estimate for the specific subcarrier over the superframe.
A wireless communication apparatus, comprising:
- means for generating a frequency domain channel estimate for each of a plurality of subcarriers for every symbol in a unit of data of a transmitter signal;
- means for determining an average frequency domain channel estimate for each of the plurality of subcarriers, wherein the average frequency domain channel estimate for a specific subcarrier comprises an average of the frequency domain channel estimate for the specific subcarrier over at least one subcarrier frame;
- and
- means for generating at least one metric indicative of transmitter performance based at least in part upon the average frequency domain channel estimate for each of the plurality of subcarriers.
A computer-readable medium having stored thereon computer-executable instructions configured for execution using a computing device for:
- generating a frequency domain channel estimate for each of a plurality of subcarriers for every symbol in a unit of data of a transmitter signal;
- determining an average frequency domain channel estimate for each of the plurality of subcarriers, wherein the average frequency domain channel estimate for a specific subcarrier comprises an average of the frequency domain channel estimate for the specific subcarrier over at least one subcarrier frame;
- and
- generating at least one metric indicative of transmitter performance based at least in part upon the average frequency domain channel estimate for each of the plurality of subcarriers.
A processor the configured to execute instructions for evaluating transmitter performance in a wireless communication environment, the instructions comprising:
- generating a frequency domain channel estimate for each of a plurality of subcarriers for every symbol in a unit of data of a transmitter signal;
- determining an average frequency domain channel estimate for each of the plurality of subcarriers, wherein the average frequency domain channel estimate for a specific subcarrier comprises an average of the frequency domain channel estimate for the specific subcarrier over at least one subcarrier frame;
- and
- generating at least one metric indicative of transmitter performance based at least in part upon the average frequency domain channel estimate for each of the plurality of subcamers.
Dependencies are inferred from the claim text.