Single carrier-frequency-division multiple access (SC-FDMA) physical uplink control channel (PUCCH) 1/1a/1b detection

A wireless communications receiver with a system for Single Carrier-Frequency-Division Multiple Access (SC-FDMA) Physical Uplink Control Channel (PUCCH) format 1/1a/1b detection, the system comprising:

• a plurality of antennas accepting a plurality of multicarrier signals transmitted simultaneously from a plurality of transmitters, with overlapping carrier frequencies;
• a plurality of pre-processing modules, each of the plurality of pre-processing modules connected to a corresponding antenna of the plurality of antennas to perform cyclic prefix (CP) removal and a fast Fourier transform (FFT) for each multicarrier signal of the plurality of multicarrier signals;
• a resource demapping module connected to the pre-processing modules and having an output connected to a PUCCH receiver;
• the PUCCH receiver comprising:
• a plurality of compensation modules, for compensating cyclic shift and reference frequency;
• a plurality of time domain decorrelators, each of the plurality of time domain decorrelators connected to a corresponding compensation module of the plurality of compensation modules;
• a plurality of single tap time delay estimators, each of the plurality of single tap time delay estimators connected to a corresponding time domain decorrelator of the plurality of time domain decorrelators, each single tap time delay estimator of the plurality of single tap time delay estimators performing a single tap measurement of time delay for a corresponding multicarrier signal using a Direction of Arrival (DoA) technique;
• a plurality of frequency domain decorrelators, each of the plurality of frequency domain decorrelators connected to a corresponding single tap time delay estimator of the plurality of single tap time delay estimators;
• a plurality of Generalized Likelihood Ratio Test (GLRT) modules, each of the plurality of GLRT modules connected to a corresponding frequency domain decorrelator of the frequency domain decorrelators;
• and,
• a post-processing module connected to each GLRT module of the plurality of GLRT modules and having an output to supply detected PUCCH 1/1a/1b format signals.

In a wireless communications receiver, a method for Single Carrier-Frequency-Division Multiple Access (SC-FDMA) Physical Uplink Control Channel (PUCCH) format 1/1a/1b detection, comprising:

• accepting a plurality of multicarrier signals transmitted simultaneously from a plurality of transmitters, with overlapping carrier frequencies;
• for each multicarrier signal, performing a single tap measurement of time delay using a Direction of Arrival (DoA) technique;
• in response to the single tap measurement for each multicarrier signal, detecting PUCCH 1/1a/1b format signals;
• and,
• supplying the detected PUCCH 1/1a/1b format signals for each multicarrier signal.