Abstract: Providing for noise estimation in wireless communication, and particularly for access request signals transmitted by a user equipment (UE), is described herein. By way of example, a wireless signal receiver can employ unused signal dimensions of a wireless network for noise estimation. In addition, the unused signal dimensions can be selected for time-frequency resources that are associated with a particular wireless channel, in order to obtain a noise estimate for that channel. By employing unused signal dimensions, a noise measurement is likely to include no other signal transmissions, and provide an accurate estimate of noise on that channel. According to various aspects of the subject disclosure, one or more Chu sequences employed for signal transmissions, root sequences thereof, or one or more cyclic shifts of a root sequence can be employed for the unused signal dimension.

Abstract: Efficient apparatus and method for Zadoff-Chu (“Chu”) sequence generation avoids additional processing and hardware complexity of conventional quadratic generating formula followed by Discrete Fourier Transform (DFT) with a reference signal generator that produces both a Zadoff-Chu sequence and its DFT. In the wireless communication system (e.g., Long Term Evolution (LTE) system), Chu sequences are extensively used, especially in the uplink (UL). Because of the single carrier operating mode, transmitting a Chu sequence in principle involves a succession of generating that sequence, performing a DFT operation and then an IFFT operation. Assuming that the sequence length is N, the initial sequence generation requires 2N multiplications and the DFT requires more than N log 2(N) multiplications. Given the frequent processing of Chu sequences, this would represent a complexity burden.

Abstract: Efficient apparatus and method for Zadoff-Chu (“Chu”) sequence generation avoids additional processing and hardware complexity of conventional quadratic generating formula followed by Discrete Fourier Transform (DFT) with a reference signal generator that produces both a Zadoff-Chu sequence and its DFT. In the wireless communication system (e.g., Long Term Evolution (LTE) system), Chu sequences are extensively used, especially in the uplink (UL). Because of the single carrier operating mode, transmitting a Chu sequence in principle involves a succession of generating that sequence, performing a DFT operation and then an IFFT operation. Assuming that the sequence length is N, the initial sequence generation requires 2N multiplications and the DFT requires more than N log 2(N) multiplications. Given the frequent processing of Chu sequences, this would represent a complexity burden.

Abstract: Providing for noise estimation in wireless communication, and particularly for access request signals transmitted by a user equipment (UE), is described herein. By way of example, a wireless signal receiver can employ unused signal dimensions of a wireless network for noise estimation. In addition, the unused signal dimensions can be selected for time-frequency resources that are associated with a particular wireless channel, in order to obtain a noise estimate for that channel. By employing unused signal dimensions, a noise measurement is likely to include no other signal transmissions, and provide an accurate estimate of noise on that channel. According to various aspects of the subject disclosure, one or more Chu sequences employed for signal transmissions, root sequences thereof, or one or more cyclic shifts of a root sequence can be employed for the unused signal dimension.

Abstract: The frame of data is partitioned into a plurality of portions of data symbols. A plurality of channel elements is assigned to demodulate data symbols of correspondingly the plurality of portions of data symbols. The number of the plurality of portions of data symbols is higher in a case at high data rate than a case at low data rate.

Abstract: A method and apparatus for encoding multiple bits in parallel wherein outputs are generated recursively. During each clock cycle, the encoder processes multiple bits and generates outputs consistent with those generated sequentially over multiple clock cycles in a conventional convolutional encoder. In one embodiment, input data is stored in multiple memory storage units, which are then each uniquely addressed to provide data to parallel encoders.

Abstract: A method and apparatus for encoding multiple bits in parallel wherein outputs are generated recursively. During each clock cycle, the encoder processes multiple bits and generates outputs consistent with those generated sequentially over multiple clock cycles in a conventional convolutional encoder. In one embodiment, input data is stored in multiple memory storage units, which are then each uniquely addressed to provide data to parallel encoders.

Abstract: The frame of data is partitioned into a plurality of portions of data symbols. A plurality of channel elements (300) is assigned to demodulate data symbols of correspondingly the plurality of portions of data symbols. The number of the plurality of portions of data symbols is higher in a case at high data rate than a case at low data rate.

Abstract: A guanidine phosphate composition containing both monoquanidine phosphate and diguanidine phosphate and characterized by a weight loss of less than 1% when heated for one hour at 220.degree. C. is prepared by mixing together about equimolar quantities of phosphoric acid and cyanoguanidine and heating this reaction mixture with agitation in the presence of a surfactant to a temperature in the range of 200.degree. C. to 240.degree. C. Agitation is continued for two hours at 200.degree. C. or until foaming stops (about one hour at 240.degree. C.). The guanidine phosphate composition so obtained may be applied to cellulosic materials to render them fire retardant.

Abstract: Finely divided sodium tripolyphosphate (STPP) particles are sprayed with a solution of sodium orthophosphate to prepare an agglomerated feed material which is then calcined at 300.degree. to 600.degree.C to produce granular STPP of medium range bulk density.