Serial cancellation receiver design for a coded signal processing engine
First Claim
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1. An apparatus configured for generating an interference suppressed signal, comprising:
- one or more power estimators configured for computing power estimates of components of a received signal;
a control block coupled to the one or more power estimators configured to determine an order of suppression of the components of a received signal based at least in part on the power estimates; and
one or more processing fingers coupled to the control block configured for generating at least one interference suppressed signal stream;
wherein the one or more processing fingers comprises at least one Hadamard transform module configured to compute the amplitudes of a plurality of channels.
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Abstract
An interference cancelling receiver combines data from multiple paths after aligning to transmitter timing, and uses either an equalizer or a Rake receiver to compute symbol estimates. Interference estimates are generated from the symbol estimates, and multiple interference estimates are combined after re-aligning the interference estimates to receiver timing. At least two segments of symbol estimates are computed for each segment of interference cancelled data.
Various techniques may be employed for controlling the latency and sequencing of these operations, and the subsystems within the canceller may use different processing clock speeds.
151 Citations
13 Claims
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1. An apparatus configured for generating an interference suppressed signal, comprising:
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one or more power estimators configured for computing power estimates of components of a received signal; a control block coupled to the one or more power estimators configured to determine an order of suppression of the components of a received signal based at least in part on the power estimates; and one or more processing fingers coupled to the control block configured for generating at least one interference suppressed signal stream; wherein the one or more processing fingers comprises at least one Hadamard transform module configured to compute the amplitudes of a plurality of channels.
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2. An apparatus configured for generating an interference suppressed signal, comprising:
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one or more power estimators configured for computing power estimates of components of a received signal; a control block coupled to the one or more power estimators configured to determine an order of suppression of the components of a received signal based at least in part on the power estimates; and one or more processing fingers coupled to the control block configured for generating at least one interference suppressed signal stream; wherein the one or more processing fingers comprises a de-spreader configured for despreading an input signal.
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3. A receiver for a wireless communication system, said communication system comprising:
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a control processor configured for receiving a signal y having one or more data parameters, said control processor configured for selecting which of the one or more data parameters to send to each of one or more fingers, the one or more fingers comprising at least one search finger and at least one tracking finger; at least one correlator residing in said at least one tracking finger, said at least one correlator being configured to correlate said signal y with a reference signal sn; and a Coded Signal Processing Engine (CSPE) residing in said at least one tracking finger and configured for performing interference suppression in the signal y, said CSPE configured for generating a projection from the signal y, signal y comprising, a spread signal matrix si of the source of interest, signals of other interfering sources s1, s2, s3 . . . , sp; and
noise n. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification