Abstract:
A method and apparatus for encoding channel quality indicator (CQI) and precoding control information (PCI) bits are disclosed. Each of input bits, such as CQI bits and/or PCI bits, has a particular significance. The input bits are encoded with a linear block coding. The input bits are provided with an unequal error protection based on the significance of each input bit. The input bits may be duplicated based on the significance of each input bit and equal protection coding may be performed. A generator matrix for the encoding may be generated by elementary operation of conventional basis sequences to provide more protection to a most significant bit (MSB).
Abstract:
A method and apparatus for implementing spatial processing with unequal modulation and coding schemes (MCSs) or stream-dependent MCSs are disclosed. Input data may be parsed into a plurality of data streams, and spatial processing is performed on the data streams to generate a plurality of spatial streams. An MCS for each data stream is selected independently. The spatial streams are transmitted via multiple transmit antennas. At least one of the techniques of space time block coding (STBC), space frequency block coding (SFBC), quasi-orthogonal Alamouti coding, time reversed space time block coding, linear spatial processing and cyclic delay diversity (CDD) may be performed on the data/spatial streams. An antennal mapping matrix may then be applied to the spatial streams. The spatial streams are transmitted via multiple transmit antennas. The MCS for each data stream may be determined based on a signal-to-noise ratio of each spatial stream associated with the data stream.
Abstract:
A method and apparatus for encoding and decoding high speed shared control channel (HS-SCCH) data are disclosed. For part 1 data encoding, a mask may be generated using a wireless transmit/receive unit (WTRU) identity (ID) and a generator matrix with a maximum minimum Hamming distance. For part 2 data encoding, cyclic redundancy check (CRC) bits are generated based on part 1 data and part 2 data. The number of CRC bits is less than the WTRU ID. The CRC bits and/or the part 2 data are masked with a mask. The mask may be a WTRU ID or a punctured WTRU ID of length equal to the CRC bits. The mask may be generated using the WTRU ID and a generator matrix with a maximum minimum Hamming distance. The masking may be performed after encoding or rate matching.
Abstract:
A method and apparatus for implementing spatial processing with unequal modulation and coding schemes (MCSs) or stream-dependent MCSs are disclosed. Input data may be parsed into a plurality of data streams, and spatial processing is performed on the data streams to generate a plurality of spatial streams. An MCS for each data stream is selected independently. The spatial streams are transmitted via multiple transmit antennas. At least one of the techniques of space time block coding (STBC), space frequency block coding (SFBC), quasi-orthogonal Alamouti coding, time reversed space time block coding, linear spatial processing and cyclic delay diversity (CDD) may be performed on the data/spatial streams. An antennal mapping matrix may then be applied to the spatial streams. The spatial streams are transmitted via multiple transmit antennas. The MCS for each data stream may be determined based on a signal-to-noise ratio of each spatial stream associated with the data stream.
Abstract:
Un método para implementar el procesamiento espacial de datos, caracterizado el método por: seleccionar un primer esquema de modulación y codificación, MCS, y un segundo MCS, en donde el primer MCS se selecciona para que sea un MCS de orden superior que el segundo MCS, en donde el primer MCS seleccionado se ha de utilizar para un primer flujo espacial y el segundo MCS seleccionado se ha de utilizar para un segundo flujo espacial; generar el primer flujo espacial utilizando el primer MCS seleccionado y el segundo flujo espacial utilizando el segundo MCS seleccionado; realizar codificación de bloque espacio temporal, STBC, sobre el primer flujo espacial y el segundo flujo espacial para generar un primer flujo espacio temporal, un segundo flujo espacio temporal, y un tercer flujo espacio temporal, en donde el primer flujo espacio temporal y el segundo flujo espacio temporal se generan a partir del primer flujo espacial, y el tercer flujo espacio temporal se genera a partir del segundo flujo espacial; aplicar desplazamiento cíclico al primer flujo espacio temporal, al segundo flujo espacio temporal, y al tercer flujo espacio temporal para generar tres flujos espacio temporales desplazados cíclicamente; y transmitir los tres flujos espacio temporales desplazados cíclicamente a través de tres antenas.
Abstract:
A method and apparatus for encoding channel quality indicator, CQI, bits, are disclosed. The method comprises: generating CQI bits (108); encoding the CQI bits (104); generating a signal conveying the CQI bits (106); applying a gain factor b hs to the CQI bits and sending the encoded CQI bits (106); wherein the gain factor b hs for the CQI bits is derived from a quantized amplitude ratio A hs =b hs /b c , wherein b c is a gain factor for a dedicated physical control channel, DPCCH, A hs is translated from CQI , which is signalled by a higher layer, and the translation of CQI into the quantized amplitude ratio A hs is performed in accordance with a predefined table.
Abstract:
Se muestra un método y aparato para codificar un indicador de calidad de canal (CQI) y precodificar bits de control de información. Cada uno de los bits de entrada, tal como bits CQI y/o bits PCI, tiene un significado particular. Los bits de entrada se codifican con una codificación linear de bloque. Los bits de entrada se proporcionan con una protección desigual de error en base al significado de cada bit de entrada. Los bits de entrada pueden ser duplicados en base al significado de cada bit de entrada y puede ser lograda una codificación idéntica de protección. Una matriz generadora para la decodificación puede ser generada mediante una operación elemental de secuencias de base convencional para proporcionar más protección a un bit más significativo (MSB).