Abstract: The programmable modem for digital data of the present invention provides a highly programmable, digital modem implemented in an integrated circuit which can be customized to specific applications. The programmable modem uses spread spectrum techniques and is specifically programmable to alter the parameters of the modem to improve performance. The present invention also provides a systematic method and development kit to provide rapid customization of a modem for a particular application or for rapid specification of a high-performance application specific integrated circuit mode.

Abstract: Methods and apparatus wherein subsequent permutation and inverse permutation operations provide inputs in correct order for first and second processes. Processes needing inputs in original order and processes needing inputs in permutated order can be distinguished, thereby using one of the processes as reference process. Permutation and inverse permutation operations which can fit into a turbo coding system and in systems applying the turbo coding principle. At least one permutation and one inverse permutation operation can be performed subsequently. Permutation and inverse permutation operations may be altered by scheduling linear writing and reading operation and permutated or inverse permutated writing and reading operations. These methods enable parallel execution of sub-processes, where the processes producing and consuming data can be performed in a parallel way, and the writing and reading operations to and from a memory can be performed in a parallel way.

Abstract: The programmable modem for digital data of the present invention provides a highly programmable, digital modem implemented in an integrated circuit which can be customized to specific applications. The programmable modem uses spread spectrum techniques and is specifically programmable to alter the parameters of the modem to improve performance. The present invention also provides a systematic method and development kit to provide rapid customization of a modem for a particular application or for rapid specification of a high-performance application specific integrated circuit mode.

Abstract: The programmable modem for digital data of the present invention provides a highly programmable, digital modem implemented in an integrated circuit which can be customized to specific applications. The programmable modem uses spread spectrum techniques and is specifically programmable to alter the parameters of the modem to improve performance. The present invention also provides a systematic method and development kit to provide rapid customization of a modem for a particular application or for rapid specification of a high-performance application specific integrated circuit mode.

Abstract: Methods and apparatus are described wherein subsequent permutation and inverse permutation operations provide inputs in correct order for first and second processes. Processes needing inputs in original order and processes needing inputs in permutated order can be distinguished, thereby using one of said processes as reference process. Permutation and inverse permutation operations are described which can fit into a turbo coding system and in systems applying the turbo coding principle. At least one permutation and one inverse permutation operation can be performed subsequently. Permutation and inverse permutation operations may be altered by scheduling linear writing and reading operations and permutated or inverse permutated writing and reading operations. These methods enable parallel execution of sub-processes, where the processes producing and consuming data can be performed in a parallel way, and the writing and the reading operations to and from a memory can be performed in a parallel way.

Abstract: The programmable modem for digital data of the present invention provides a highly programmable, digital modem implemented in an integrated circuit which can be customized to specific applications. The programmable modem uses spread spectrum techniques and is specifically programmable to alter the parameters of the modem to improve performance. The present invention also provides a systematic method and development kit to provide rapid customization of a modem for a particular application or for rapid specification of a high-performance application specific integrated circuit mode.

Abstract: The programmable modem for digital data of the present invention provides a highly programmable, digital modem implemented in an integrated circuit which can be customized to specific applications. The programmable modem uses spread spectrum techniques and is specifically programmable to alter the parameters of the modem to improve performance. The present invention also provides a systematic method and development kit to provide rapid customization of a modem for a particular application or for rapid specification of a high-performance application specific integrated circuit mode.

Abstract: The programmable modem for digital data of the present invention provides a highly programmable, digital modem implemented in an integrated circuit which can be customized to specific applications. The programmable modem uses spread spectrum techniques and is specifically programmable to alter the parameters of the modem to improve performance. The present invention also provides a systematic method and development kit to provide rapid customization of a modem for a particular application or for rapid specification of a high-performance application specific integrated circuit mode.