Method and apparatus for equalizing signals

1. A communications device, comprising:

a transceiver operating in a wideband code division multiple access high speed downlink packet access communication system;

a memory to store computer instructions; and

a processor coupled to the memory and the transceiver, wherein responsive to executing the instructions, the processor performs operations comprising:

converting a carrier signal to a baseband signal;

calculating a time domain channel estimation from the baseband signal;

applying a Fast Fourier Transform to the time domain channel estimation to produce a frequency domain channel estimation;

performing a frequency domain tap weight calculation according to the frequency domain channel estimation without performing a matrix inversion to perform the frequency domain tap weight calculation;

applying an inverse Fast Fourier Transform to the frequency domain tap weight calculation to produce a time domain tap weight calculation;

equalizing the baseband signal according to the time domain tap weight calculation using a linear filter to provide an equalized baseband signal;

processing the equalized signal to convey audio signals from an audio system of the communications device and to convey visual signals from a display of the communications device; and

performing an equalizer function according to one group among a group of equalizer techniques comprising a least mean square equalization, and a recursive least square equalization,

wherein averaging is performed from one frame to a next frame, and wherein the communications device comprises one of a wireless mobile device, a cable transceiver, a modem, a voice over internet protocol handset, or a Plain Old Telephone handset.

2. The communications device of claim 1 , wherein the audio system intercepts or conveys audible signals.

3. The communications device of claim 1 , further comprising an antenna coupled to the transceiver.

4. The communications device of claim 1 , comprising an audio system, wherein the operations further comprise conveying audible signals according to the equalized baseband signal.

5. The communications device of claim 1 , wherein the operations further comprise conveying visual signals according to the equalized baseband signal.

6. A non-transitory machine-readable storage medium, comprising instructions, wherein responsive to executing the instructions, a processor performs operations comprising:

calculating a time domain channel estimation from an incoming signal transmitted in a wideband code division multiple access high speed downlink packet access communication system;

translating the time domain channel estimation to a frequency domain channel estimation;

performing a frequency domain tap weight calculation according to the frequency domain channel estimation without performing a matrix inversion to perform the frequency domain tap weight calculation;

translating the frequency domain tap weight calculation to a time domain tap weight calculation;

equalizing the incoming signal according to the time domain tap weight calculation using a linear filter to provide an equalized baseband signal;

processing the equalized signal to convey audio signals from an audio system of a communications device and to convey visual signals from a display of the communications device; and

performing an equalizer function on the incoming signal according to one group among a group of equalizer techniques comprising a minimum mean squared error equalization, a least mean square equalization, and a recursive least square equalization,

wherein the non-transitory machine-readable storage medium is used by a communication device to execute instructions, and wherein the communications device comprises one of a wireless mobile device, a cable transceiver, a modem, a voice over internet protocol handset, or a Plain Old Telephone handset.

7. The non-transitory machine-readable storage medium of claim 6 , wherein the operations further comprise applying a Fast Fourier Transform to the time domain channel estimation to produce the frequency domain channel estimation by using no more than a 64 point Fast Fourier Transform for the Fast Fourier Transform.

8. The non-transitory machine-readable storage medium of claim 6 , wherein the operations further comprise applying an inverse Fast Fourier Transform to the frequency domain tap weight calculation to produce the time domain tap weight calculation.

9. The non-transitory machine-readable storage medium of claim 6 , wherein the performing comprises performing the equalizer function where averaging is performed from one frame to a next frame.

10. The non-transitory machine-readable storage medium of claim 6 , wherein the incoming signal comprises one of a data signal, a video signal, an audio signal, or a combined video and audio signal.

11. The non-transitory machine-readable storage medium of claim 6 , wherein the operations further comprise conveying audible signals according to the equalized baseband signal.

12. The non-transitory machine-readable storage medium of claim 6 , wherein the operations further comprise conveying visual signals according to the equalized baseband signal.

13. An equalizer, comprising:

a channel estimation calculator for calculating a time domain channel estimation from a baseband signal transmitted in a wideband code division multiple access high speed downlink packet access communication system;

a Fast Fourier Transform processor for translating the time domain channel estimation to a frequency domain channel estimation;

a tap weight calculator for calculating a frequency domain tap weight according to the frequency domain channel estimation without performing a matrix inversion to calculate the frequency domain tap weight;

an inverse Fast Fourier Transform processor for translating the frequency domain tap weight calculation to a time domain tap weight calculation;

a linear filter for equalizing the baseband signal according to the time domain tap weight calculation to provide an equalized baseband signal, wherein the equalized signal is processed to convey audio signals from an audio system of a communications device and to convey visual signals from a display of the communications device; and

wherein equalization is performed according to one group among a group of equalizers comprising a minimum mean squared error equalizer, a least mean square equalizer, and a recursive least square equalizer, and

wherein averaging is performed from one frame to a next frame, and wherein the equalizer is used in a communication device.

14. The equalizer of claim 13 , further comprising an audio system for intercepting audible signals.

15. The equalizer of claim 13 , wherein the baseband signal comprises one of a data signal, a video signal, an audio signal, or a combined video and audio signal.

16. The equalizer of claim 13 , further comprising an audio system for conveying audible signals according to the equalized baseband signal.

17. The equalizer of claim 13 , further comprising a display for conveying visual signals according to the equalized baseband signal.

18. The equalizer of claim 13 , wherein the communication device comprises one of a wireless mobile device, a cable transceiver, a modem, a voice over internet protocol handset, or a Plain Old Telephone handset.