Abstract:
A Node-B/base station has an access burst detector. The access burst detector comprises at least one antenna (28 1 -28 M ) for receiving signals from users and a pool of reconfigurable correlators, implemented in ASIC. Each correlator (36 1 -36 O ) correlates an inputted access burst code at an inputted code phase with an inputted antenna output. An antenna controller (30) selectively couples any output of the at least one antenna to an input of any of the correlators. A code controller (32) provides to an input of each correlator an access burst code. The code controller controls the inputted code phase of each controller. A sorter/post processor (38) sorts output energy levels of the correlators.
Abstract:
A wireless transmit/receive unit (WTRU 250, Figure 1) for processing code division multiple access (CDMA) signals. The WTRU includes modem host (300) and a high speed downlink packet access (HSDPA) co-processor (400) , which communicate over a plurality of customizable interfaces. The modem host operates in accordance with third generation partnership project (3GPP) Release 4 (R4) standards, and the HSDPA co-processor enhances the wireless communication capabilities of the WTRU as a whole such that the WTRU operates in accordance with 3GPP Release 5 (S3) standards.
Abstract:
A system for generating pseudorandom codes using a register (20) which contains an identification of the code tree leg of the desired code and a counter (12) which outputs a successive binary sequence. The output from the counter (12) is bit-by-bit ANDed (18) with the output of the register (20), and those outputs are XORed (22) together to output a single bit. As the counter (12) is sequenced, each count results in a different bit that is output from the XOR gate (22), resulting in the desired code.
Abstract:
A wireless transmit receive unit (WTRU) and methods are used in a wireless communication system to process sampled received signals to establish and/or maintain wireless communications (Fig 9 & 10). A selectively controllable coherent accumulation unit produces power delay profiles. A selectively controllable post processing unit passes threshold qualified magnitude approximation values and PDP positions to a device such as a rake receiver to determine receive signal paths.
Abstract:
A Node-B/base station receiver comprises at least one antenna for receiving signals. Each finger of a pool of reconfigurable Rake fingers recovers a multipath component of a user and is assigned a code of the user, a code phase of the multipath component and an antenna of the at least one antenna. An antenna/Rake finger pool interface provides each finger of the Rake pool an output of the antenna assigned to that Rake finger. A combiner combines the recovered multipath components for a user to produce data of the user.
Abstract:
A physical layer transport composite processing system used in a wireless communication system. A plurality of interconnected processing blocks are provided. The blocks are interconnected by a read data bus, a write data bus and a control bus. The blocks include a transport channel processing block (303, 307), a composite channel processing block (305, 309) and a chip rate processing block (301, 311). At least two of the blocks are capable of processing data for a plurality of wireless formats. A first set of parameters is programmed into the blocks for a particular wireless mode. The blocks are operated to process data in the particular wireless format mode.
Abstract:
A data processing system ciphers and transfers data between a first memory unit and a second memory unit, such as, for example, between a share memory architecture (SMA) static random access memory (SRAM) and a double data rate (DDR) synchronous dynamic random access memory (SDRAM). The system includes a ciphering engine and a data-mover controller. The data-mover controller includes at least one register having a field that specifies whether or not the transferred data should be ciphered. If the field specifies that the transferred data should be ciphered, the field also specifies the type of ciphering that is to be performed, such as a third generation partnership project (3GPP) standardized confidentially cipher algorithm 'f8' or integrity cipher algorithm 'f9'.
Abstract:
Components and method are provided to efficiently process wireless communications data where prior knowledge of the specific format of the communication data is not available. A wireless transmit receive unit (WTRU) is configured for use in a wireless communication system where communication data for selected channels is transmitted in system time frames in formats selected from among a set of predefined formats. The WTRU has a receiver, a memory, a received chip rate processor (RCRP), a format detector and a de-interleaver. The RCRP is preferably configured to despread each wireless signal of spread data received in each time frame using a minimum spreading code or other appropriate key sequence and to store resultant despread data for each respective time frame in the memory. The format detector is preferably configured to determine the number of physical channels and the respective spreading factor for each physical channel for the wireless signal of spread data received in each time frame. The de-interleaver is preferably configured to de-interleave the stored data despread by the RCRP for each respective time frame into the number of physical channels determined by the format detector for the respective time frame.