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Embodiments include a method of signal processing in which each of a set of individual estimates of a transmitted symbol is added to a combined symbol estimate based on a relation between a signal quality value corresponding to the individual estimate and a threshold value, where the threshold value

Embodiments include a method of signal processing in which each of a set of individual estimates of a transmitted symbol is added to a combined symbol estimate based on a relation between a signal quality value corresponding to the individual estimate and a threshold value, where the threshold value is based on a maximum among the signal quality values.

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What is claimed is: 1. A method of signal processing, said method comprising: for each of a plurality of received instances of a transmitted signal, obtaining (A) a complex-valued estimate of a symbol carried by the transmitted signal and (B) a signal quality value; based on at least one among the

What is claimed is: 1. A method of signal processing, said method comprising: for each of a plurality of received instances of a transmitted signal, obtaining (A) a complex-valued estimate of a symbol carried by the transmitted signal and (B) a signal quality value; based on at least one among the plurality of signal quality values, calculating a threshold value, wherein the threshold value is dynamic and is based on a received signal strength indication (RSSI); for each of the plurality of received instances, determining a corresponding lock state, wherein for at least one of the plurality of received instances, said determining is based on a relation between the corresponding signal quality value and the threshold value; and based on the symbol estimates and the corresponding lock states, transforming the plurality of received instances into a complex-valued combined estimate of the symbol carried by the transmitted signal. 2. The method of signal processing according to claim 1, wherein said transforming the plurality of received instances into a complex-valued combined estimate comprises coherently combining at least two of the complex-valued estimates. 3. The method of signal processing according to claim 1, wherein said complex-valued combined estimate includes an estimate of a first value carried by an in-phase component of the symbol and an estimate of a second value carried by a quadrature component of the symbol, the second value being different than the first value. 4. The method of signal processing according to claim 1, wherein said transforming the plurality of received instances into a complex-valued combined symbol estimate comprises, for each of the plurality of received instances, including the corresponding complex-valued symbol estimate in the complex-valued combined symbol estimate if the corresponding lock state has a first value, and excluding the corresponding complex-valued symbol estimate from the complex-valued combined symbol estimate if the corresponding lock state has a second value different than the first value. 5. The method of signal processing according to claim 1, said method comprising, for each of the plurality of received instances, obtaining an estimate of a response of the corresponding transmission channel, wherein, for at least one of the plurality of received instances, the signal quality value is based on the corresponding estimated channel response. 6. The method of signal processing according to claim 5, said method comprising, for at least one of the plurality of received instances and based on the corresponding estimated channel response, altering a phase of the complex-valued symbol estimate. 7. The method of signal processing according to claim 1, said method comprising, for each of the plurality of received instances, obtaining (C) a complex-valued estimate of another symbol carried by the transmitted signal and (D) another signal quality value; based on at least one among the other signal quality values, calculating another threshold value; and calculating a complex-valued combined estimate of the other symbol, based on the complex-valued estimates of the other symbol, the other signal quality values, and the other threshold value. 8. The method of signal processing according to claim 1, wherein said method is performed with respect to a first symbol carried by the transmitted signal during a first symbol period, said method comprising performing a second instance of the method of signal processing according to claim 1 with respect to a second symbol carried by the transmitted signal during a second symbol period consecutive to the first symbol period, wherein the second symbol is different than the first symbol, said method comprising performing a third instance of the method of signal processing according to claim 1 with respect to a third symbol carried by the transmitted signal during a third symbol period consecutive to the second symbol period, wherein the third symbol is different than the first symbol and wherein the third symbol is different than the second symbol. 9. The method of signal processing according to claim 1, wherein said transforming the plurality of received instances into a complex-valued combined estimate includes compensating for a relative time delay between at least two of the symbol estimates. 10. The method of signal processing according to claim 1, wherein said obtaining a signal quality value includes calculating a measure of received energy. 11. The method of signal processing according to claim 1, wherein the plurality of received instances includes a first set received via a first antenna and a second set received via a second antenna different than the first antenna. 12. The method of signal processing according to claim 1, wherein the plurality of received instances includes a first set received via a first antenna and a second set received via a second antenna different than the first antenna, and further comprising calculating a second threshold value, wherein the second threshold value is dynamic and is based on a second received signal strength indication (RSSI), and wherein said determining a corresponding lock state is based, for at least one of the first set, on a relation between the corresponding signal quality value and the first threshold value and, for at least one of the second set, on a relation between the corresponding signal quality value and the second threshold value. 13. A data storage medium having a set of machine-readable instructions describing the method of signal processing according to claim 1. 14. An apparatus for signal processing, said apparatus comprising: a plurality of fingers, each configured to calculate, for a corresponding one of a plurality of received instances of a transmitted signal, (A) a signal quality value and (B) a complex-valued estimate of a symbol carried by the transmitted signal; a threshold calculator configured to calculate a threshold value based on at least one among the plurality of signal quality values, wherein the threshold value is dynamic and is based on a received signal strength indication (RSSI); a comparator configured to determine a lock state for each of the plurality of received instances; and a combiner configured to calculate, based on the symbol estimates and the corresponding lock states, a complex-valued combined estimate of the symbol carried by the transmitted signal, wherein, for each of more than one of the plurality of received instances, said comparator is configured to determine the corresponding lock state based on a relation between the corresponding signal quality value and the threshold value. 15. The apparatus for signal processing according to claim 14, wherein each of said plurality of fingers is configured to calculate an estimate of a response of the corresponding transmission channel, and wherein at least one of said plurality of fingers is configured to calculate the corresponding signal quality value based on the corresponding estimated channel response. 16. The apparatus for signal processing according to claim 15, wherein at least one of said plurality of fingers is configured to alter a phase of the complex-valued symbol estimate based on the corresponding estimated channel response. 17. The apparatus for signal processing according to claim 14, wherein each of said plurality of fingers is configured to calculate a signal quality value for each of at least three consecutive symbol periods, and wherein said threshold calculator is configured to calculate a different instance of the threshold value for each of the at least three consecutive symbol periods, and wherein, for each of the at least three consecutive symbol periods, and for each of the plurality of received instances, said comparator is configured to determine a corresponding lock state based on a relation between the corresponding signal quality value and the instance of the threshold value for that period. 18. The apparatus for signal processing according to claim 14, wherein the plurality of received instances includes a first set received via a first antenna and a second set received via a second antenna different than the first antenna. 19. An apparatus for signal processing, said apparatus comprising: means for obtaining, for each of a plurality of received instances of a transmitted signal, (A) a complex-valued estimate of a symbol carried by the transmitted signal and (B) a signal quality value; means for calculating, based on at least one among the plurality of signal quality values, a threshold value, wherein the threshold value is dynamic and is based on a received signal strength indication (RSSI); means for determining, for each of the plurality of received instances, a corresponding lock state, wherein for at least one of the plurality of received instances, said determining is based on a relation between the corresponding signal quality value and the threshold value; and means for calculating, based on the symbol estimates and the corresponding lock states, a complex-valued combined estimate of the symbol carried by the transmitted signal. 20. The apparatus for signal processing according to claim 19, said apparatus comprising means for obtaining, for each of the plurality of received instances, an estimate of a response of the corresponding transmission channel, wherein, for at least one of the plurality of received instances, said means for obtaining a complex-valued estimate and a signal quality value is configured to calculate the signal quality value based on the corresponding estimated channel response. 21. The apparatus for signal processing according to claim 20, wherein, for at least one of the plurality of received instances, said means for obtaining a complex-valued estimate and a signal quality value is configured to alter a phase of the complex-valued symbol estimate based on the corresponding estimated channel response. 22. The apparatus for signal processing according to claim 19, wherein each of said means for obtaining a complex-valued estimate and a signal quality value is configured to calculate a signal quality value for each of at least three consecutive symbol periods, and wherein said means for calculating a threshold value is configured to calculate a different instance of the threshold value for each of the at least three consecutive symbol periods, and wherein, for each of the at least three consecutive symbol periods, and for each of the plurality of received instances, said means for determining a corresponding lock state is configured to determine a corresponding lock state based on a relation between the corresponding signal quality value and the instance of the threshold value for that period. 23. The apparatus for signal processing according to claim 19, wherein the plurality of received instances includes a first set received via a first antenna and a second set received via a second antenna different than the first antenna.