Abstract: A 3D graphics pipeline includes a prefetch mechanism that feeds a cache of depth tiles. The prefetch mechanism may be predictive, using triangle geometry information from previous pipeline stages to pre-charge the cache, thereby allowing for an increase in memory bandwidth efficiency. A z-value compression technique may be optionally utilized to allow for a further reduction in power consumption and memory bandwidth.

Abstract: Techniques for efficient KASUMI ciphering are disclosed. In one aspect, one KASUMI round for generating a fractional portion of the KASUMI cipher is deployed with appropriate feedback such that eight sequential rounds produce the KASUMI output. In another aspect, one third of the FO function is deployed with appropriate feedback such that three successive cycles produce the FO output. In yet another aspect, the FI function is deployed with appropriate feedback such that two subsequent cycles produce the FI output. In yet another aspect, a sub-key generator comprising two shift registers produces sub-keys for each round and sub-stage thereof in an efficient manner. These aspects, collectively, yield the advanced benefits of low area and low cost implementations of KASUMI with a simple user interface. Various other aspects of the invention are also presented.

Abstract: Techniques for efficient W-CDMA modulation are disclosed. In one aspect, a multiplexing/coding chain for use in modulation such as that defined by the W-CDMA specification is disclosed. In another aspect, transport blocks are processed and concatenated, utilizing memory efficiently. This aspect has the further benefit of preparing transport channels for efficient subsequent processing. It also allows for ease of interface with the transport channel source. In another aspect, the use of repeated channel coding is used in lieu of an interleaver memory to provide channel coding and interleaving. These aspects, collectively, yield the advanced benefits of a system, such as W-CDMA, in a hardware efficient manner. The techniques described herein apply equally to both access points and access terminals. The techniques are not limited to W-CDMA systems; they are quite suitable to other systems requiring the various benefits the invention offers. Various other aspects of the invention are also presented.

Abstract: Techniques for efficient W-CDMA modulation are disclosed. In one aspect, a multiplexing/coding chain for use in modulation such as that defined by the W-CDMA specification is disclosed. In another aspect, transport blocks are processed and concatenated, utilizing memory efficiently. This aspect has the further benefit of preparing transport channels for efficient subsequent processing. It also allows for ease of interface with the transport channel source. In another aspect, the use of repeated channel coding is used in lieu of an interleaver memory to provide channel coding and interleaving. These aspects, collectively, yield the advanced benefits of a system, such as W-CDMA, in a hardware efficient manner. The techniques described herein apply equally to both access points and access terminals. The techniques are not limited to W-CDMA systems; they are quite suitable to other systems requiring the various benefits the invention offers. Various other aspects of the invention are also presented.

Abstract: Techniques for efficient KASUMI ciphering are disclosed. In one aspect, one KASUMI round for generating a fractional portion of the KASUMI cipher is deployed with appropriate feedback such that eight sequential rounds produce the KASUMI output. In another aspect, one third of the FO function is deployed with appropriate feedback such that three successive cycles produce the FO output. In yet another aspect, the FI function is deployed with appropriate feedback such that two subsequent cycles produce the FI output. In yet another aspect, a sub-key generator comprising two shift registers produces sub-keys for each round and sub-stage thereof in an efficient manner. These aspects, collectively, yield the advanced benefits of low area and low cost implementations of KASUMI with a simple user interface. Various other aspects of the invention are also presented.