Abstract: A pothole filling method and apparatus with a separate liquid asphalt tank, aggregate hopper, and activator container, and having and using one or more of the following features: 1. Compressed air to deliver the liquid asphalt component from the liquid asphalt tank to the mixing head; 2. A swivel between extender delivery conduits, with an internal sleeve for guiding aggregate and protecting the swivel bearings; 3. A water cleaning system being switchable between a clean out line connected directly to a mixing/delivery unit or to the liquid asphalt delivery line, which cleans the delivery line as well as the mixing/delivery unit; 4. A mixer/delivery unit clean out is provided, wherein the unit is operated at increased speed a short time after the unit stops operating; 5. Compressed air bubbler or an air driven stirrer for mixing the liquid component. 6.

Abstract: Certain aspects of the present disclosure relate to techniques for generating likely demodulation candidates using Vector Candidate Sampling (VCS). VCS is used to generate high likelihood candidates for Multiple Input Multiple Output (MIMO) demodulation that approaches optimal maximum a posteriori (MAP) performance with reasonable complexity. A receive data vector is recorded corresponding to a signal received at a MIMO receiver. A plurality of likely candidates are determined for MIMO demodulation via VCS, based at least on the receive data vector. Determining the likely candidates may include perturbing the receive data vector for each candidate based on a pre-determined perturb vector, and estimating a corresponding transmit data vector based at least on the perturbed receive data vector for the candidate and an estimator matrix, wherein the likely candidate comprises the estimated data vector.

Abstract: Wireless receiver circuits and methods include algorithms for switching between a least-squares/minimum mean-square error method of channel estimation known as the CE algorithm, and a continuous plot method of channel estimation known as the CPCE algorithm based upon channel characteristics to improve reception of wireless communications in different reception conditions. In an embodiment, the CPCE algorithm may be selected by a processor for use in channel estimation when a calculated number of candidate paths is less than or equal to a first threshold value, a calculated power ratio of the L strongest paths to the total of all paths is greater than or equal to a second threshold value, and the maximum Automatic Gain Control variation is greater than or equal to a third threshold value. Threshold values may be based on field testing, and set to values at which the CE or CPCE algorithm exhibits better performance.

Abstract: Certain aspects of the present disclosure relate to techniques for generating likely demodulation candidates using Vector Candidate Sampling (VCS). VCS is used to generate high likelihood candidates for Multiple Input Multiple Output (MIMO) demodulation that approaches optimal maximum a posteriori (MAP) performance with reasonable complexity. A receive data vector is recorded corresponding to a signal received at a MIMO receiver. A plurality of likely candidates are determined for MIMO demodulation via VCS, based at least on the receive data vector. Determining the likely candidates may include perturbing the receive data vector for each candidate based on a pre-determined perturb vector, and estimating a corresponding transmit data vector based at least on the perturbed receive data vector for the candidate and an estimator matrix, wherein the likely candidate comprises the estimated data vector.

Abstract: Wireless receiver circuits and methods include algorithms for switching between a least-squares/minimum mean-square error method of channel estimation known as the CE algorithm, and a continuous plot method of channel estimation known as the CPCE algorithm based upon channel characteristics to improve reception of wireless communications in different reception conditions. In an embodiment, the CPCE algorithm may be selected by a processor for use in channel estimation when a calculated number of candidate paths is less than or equal to a first threshold value, a calculated power ratio of the L strongest paths to the total of all paths is greater than or equal to a second threshold value, and the maximum Automatic Gain Control variation is greater than or equal to a third threshold value. Threshold values may be based on field testing, and set to values at which the CE or CPCE algorithm exhibits better performance.

Abstract: The present invention provides a new method for determining the point at which the mobile station is required to transmit a periodic registration to the base station when the mobile station is locked onto a DAMPS Digital Control Channel. The REGID system clock in the mobile station is replaced with a timing mechanism termed REGID_PER_TMR. Instead of tracking the REGID system clock from zero to NXTREG, REGID_PER_TMR is a function of the NXTREG permanent variable and the REGID_PER variable transmitted in the Registration Parameters FBCCH message. Thus, REGID_PER_TMR is calculated as a specific time period as a function of NXTREG and REGID_PER on power up of the mobile station and does not need to be stored within the memory of the mobile station. REGID_PER_TMR then functions as a countdown timer relative to NXTREG such that the mobile station automatically executes Periodic Registration Determination per IS 136.1, Section 6.3.9 on expiration of REGID_PER_TMR.