초록 ▼

A receiver recovers data for at least one of a plurality of users from radio signals generated by the plurality of users. The receiver includes data detectors, each of which is associated with one of a plurality of temporal displacements in communications paths through which the radio signals pass.

A receiver recovers data for at least one of a plurality of users from radio signals generated by the plurality of users. The receiver includes data detectors, each of which is associated with one of a plurality of temporal displacements in communications paths through which the radio signals pass. Each of the data detectors estimates a user data symbol for one of the plurality of users from at least one of the radio signals. The receiver also includes a signal strength estimator to estimate signal strengths of the radio signals, and a receiver controller to assign user codes and the temporal displacements to each the plurality of data detectors according to the signal strengths of the radio signals. The receiver controller assigns a first user code for a first user to a first number of data detectors and a second user code for a second user to a second number of data detectors. The first number of data detectors has different temporal displacements than the second number of data detectors.

대표청구항 ▼

1. A receiver for recovering data for at least one of a plurality of users from radio signals associated with the plurality of users, the receiver comprising:data detectors, each of the data detectors being associated with one of a plurality of temporal displacements of communications paths through

1. A receiver for recovering data for at least one of a plurality of users from radio signals associated with the plurality of users, the receiver comprising:data detectors, each of the data detectors being associated with one of a plurality of temporal displacements of communications paths through which the radio signals pass, each of the data detectors to estimate a user data symbol for one of the plurality of users from at least one of the radio signals;a signal strength estimator to estimate signal strengths of the radio signals; anda receiver controller to assign user codes and temporal displacements to the data detectors according to the signal strengths of the radio signals, the receiver controller assigning a first user code for a first user to a first number of data detectors and a second user code for a second user to a second number of data detectors, the first number of data detectors having different temporal displacements than the second number of data detectors.2. The receiver of claim 1, wherein the first number of data detectors is greater than the second number of data detectors, and wherein a radio signal for the first user has a weaker signal strength than a radio signal for the second user.3. The receiver of claim 1, wherein the first number of data detectors is greater than the second number of data detectors, and wherein a radio signal for the first user has a stronger signal strength than a radio signal for the second user.4. The receiver of claim 1, further comprising:a combiner to combine estimated user data symbols for the first user to form a composite symbol.5. The receiver of claim 4, further comprising:a single processor that includes the combiner and the signal strength estimator, wherein the receiver controller controls the single processor.6. The receiver of claim 1, further comprising a data store to store the radio signals, the radio signals being received within a pre-determined time window, wherein the radio signals are input to the data detectors from the data store under control of the receiver controller.7. The receiver of claim 1, wherein the data detectors comprise rake fingers, the user codes comprise spreading codes, and the radio signals are generated in accordance with a code division multiple access (CDMA) process.8. The receiver of claim 1, wherein the signal strength estimator re-estimates signal strengths of the radio signals at the temporal displacements, and the receiver controller re-assigns the user codes and the temporal displacements to the data detectors in accordance with re-estimated signal strengths of the radio signals.9. The receiver of claim 1, further comprising:a signal re-generator coupled to the data detectors, the signal re-generator to re-generate a radio signal for the first user by combining an estimated user data symbol for the first user with one of the user codes.10. The receiver of claim 9, wherein each of the data detectors comprises:subtracting means to subtract a regenerated radio signal from a corresponding radio signal prior to estimating a user data symbol.11. A method of recovering data for at least one of a plurality of users from radio signals associated with the plurality of users, the method comprising:assigning, to each of plural data detectors, (i) one of a plurality of user codes, and (ii) one of a plurality of temporal displacements that correspond to communications paths through which the radio signals pass;estimating user data symbols using the data detectors and the radio signals;determining signal strengths of the radio signals; andre-assigning the plurality of user codes and the plurality of temporal displacements to the data detectors;wherein the re-assigning assigns a first user code for a first user to a first number of data detectors and a second user code for a second user to a second number of data detectors, the first number of data detectors having different temporal displacements than the second number of data detectors.12. The method of claim 11, wherein the first number of data detectors is greater than the second number of data detectors, and a radio signal for the first user has a weaker signal strength than a radio signal for the second user.13. The method of claim 11, wherein the first number of data detectors is greater than the second number of data detectors, and a radio signal for the first user has a stronger signal strength than a radio signal for the second user.14. The method of claim 11, further comprising combining estimated user data symbols for the first user to form a composite symbol.15. The method of claim 11, further comprising:storing the radio signals, the radio signals being received within a pre-determined time window; andre-estimating user data symbols using stored radio signals and data detectors with re-assigned user codes and temporal displacements.16. The method of claim 15, further comprising:re-determining signal strengths of the stored radio signals; andre-assigning user codes to the data detectors in accordance with signal strengths of the stored radio signals.17. The method of claim 15, further comprising:re-generating radio signals for the first user, wherein re-generating comprises combining estimated user data symbols with one of the reassigned user codes.18. The method of claim 17, further comprising: subtracting the re-generated radio signals from corresponding radio signals prior to re-estimating the user data symbols.19. The method of claim 11, wherein the data detectors comprise rake fingers and the user codes comprise spreading codes.20. The method of claim 11, wherein the radio signals are generated in accordance with a code division multiple access process.