US 6,441,786 B1 · Adaptive antenna array and method for control thereof

Abstract

A method for controlling an adaptive antenna array (50) is provided and includes receiving a plurality of signals, each signal including a series of signal data symbols (42) and signal non-data symbols (38, 40) divided into symbol transmission units with the signal non-data symbols (38, 40) disposed among the signal data symbols (42) in each unit and each signal related to the other signals of the plurality of signals as reflections of an original signal. The method also includes separating the signal non-data symbols (38, 40) from the signal data symbols (42), and comparing the signal non-data symbols (38, 40) to a set of known non-data symbols. The method further includes determining a set of weights according to the comparison of the signal non-data symbols (38, 40) to the set of known non-data symbols, the weights to be combined with the signal data values (42) to limit the effect of interference on the signal data symbols (42). An adaptive antenna array (50) is also provided including a weight calculator (62) including a program which controls the weight calculator (62) to perform the comparing (88, 90) and determining steps (94) of the method discussed above.

Claims19

Dependent claims

A method comprising the steps of:

receiving a plurality of signals, wherein each signal comprises an original signal, a summation of a plurality of reflections of the original signal, or a summation of the original signal and the plurality of reflections of the original signal, each of the plurality of received signals including a series of signal data symbols and signal non-data symbols with the signal non-data symbols disposed among the signal data symbols;
separating the signal non-data symbols from the signal data symbols;
comparing the signal non-data symbols to a set of known non-data symbols;
and
determining a set of weights according to the comparison of the signal non-data symbols to the set of known non-data symbols, the weights to be combined with more than one of the plurality of signals to limit the effect of interference on the signal data symbols.

2 more elements

A method for controlling an adaptive antenna array including a plurality of antenna elements, the method comprising the steps of:

receiving a plurality of signals, each signal including a series of signal data symbols and signal pilot symbols with the signal pilot symbols disposed among the signal data symbols and each symbol having a value, and each signal related to the other signals of the plurality of signals as reflections of an original signal;
separating the signal pilot symbols from the signal data symbols;
determining an estimated value corresponding to each of the signal pilot symbols using a set of known pilot symbols with each pilot symbol having a value;
determining the difference between the signal pilot symbol value and its corresponding estimated value for each of the signal pilot symbols;
and
determining a set of weights according to the differences between each of the signal pilot symbol values and its corresponding estimated value to limit the effect of interference on the signal data symbols.

3 more elements

A weight calculator for use in a system wherein signals are transmitted between communication devices as a plurality of signals, each signal including a series of signal data symbols and signal non-data symbols divided into symbol transmission units with the signal non-data symbols disposed among the signal data symbols in each unit and wherein each signal comprises an original signal, a summation of a plurality of reflections of the original signal, or a summation of the original signal and the plurality of reflections of the original signal, the weight calculator comprising:

a processor including a program which controls the processor (i) to receive the signal non-data symbols which have been separated from the signal data symbols;
(ii) to compare the signal non-data symbols to a set of known non-data symbols;
and (iii) to determine a set of weights according to the comparison of the signal non-data symbols to the set of known non-data symbols, the weights to be combined with the signal data values to limit the effect of interference on the signal data symbols.

Dependencies are inferred from the claim text.

Adaptive antenna array and method for control thereof

Life of this patent

Adaptive antenna array and method for control thereof

Life of this patent

Abstract

Claims19