A storage system and method for interleaving data for enhanced quality of service are provided. In one embodiment, a storage system is presented comprising a memory and a controller. The controller is configured to determine a skip length for interleaving data received from a host; interleave the data according to the determined skip length; store the interleaved data in the memory; and update a logical-to-physical address table to reflect the interleaved data. Other embodiments are provided.

Multiple data permutation operations in respective different dimensions are used to provide an overall effective data permutation using smaller blocks of data in each permutation than would be used in directly implementing the overall permutation in a single permutation operation. Data that has been permuted in one permutation operation is block interleaved, and the interleaved data is then permuted in a subsequent permutation operation. A matrix transpose is one example of block interleaving that could be applied between permutation operations.

Disclosed are an apparatus and method for transforming a matrix, and a data processing system. The apparatus may include: a first shift unit, configured to receive matrix data and perform first cyclic shift on the matrix data to generate first data; a cache unit, configured to write each row of data into the cache unit in the first data thereto in an order different from the order of respective data in the row of data to store the first data as second data; and a second shift unit, configured to read the second data from the cache unit and perform second cyclic shift on the second data to generate transformed matrix data.

Methods, systems, and devices for codeword rotation for zone grouping of media codewords are described. A value of a first pointer may be configured to correspond to a first memory address within a region of memory and a value of a second pointer may be configured to correspond to a second memory address within the region of memory. The method may include monitoring access commands for performing access operations within the region of memory, where the plurality of access command may be associated with requested addresses within the region of memory. The method may include updating the value of the second pointer bases on a quantity of the commands that are monitored satisfying a threshold and executing the plurality of commands on locations within the region of memory. The locations may be based on the requested address, the value of the first pointer, and the value of the second pointer.

Multiple data permutation operations in respective different dimensions are used to provide an overall effective data permutation using smaller blocks of data in each permutation than would be used in directly implementing the overall permutation in a single permutation operation. Data that has been permuted in one permutation operation is block interleaved, and the interleaved data is then permuted in a subsequent permutation operation. A matrix transpose is one example of block interleaving that could be applied between permutation operations.

In order provide a communication control apparatus, a radio communication apparatus, a communication control method, a radio communication method, and a program that are capable of contributing to improving a radio communication technology related to IDMA, a communication control apparatus is provided. The communication control apparatus includes a communication unit configured to communicate with a radio communication apparatus of a radio communication system using interleave division multiple access (IDMA); and a control unit configured to allocate an interleaver type of an interleaver to be used for IDMA by the radio communication apparatus.

Multiple data permutation operations in respective different dimensions are used to provide an overall effective data permutation using smaller blocks of data in each permutation than would be used in directly implementing the overall permutation in a single permutation operation. Data that has been permuted in one permutation operation is block interleaved, and the interleaved data is then permuted in a subsequent permutation operation. A matrix transpose is one example of block interleaving that could be applied between permutation operations.

According to an embodiment, an interleave circuit includes a reordering circuit and an address calculation circuit. The reordering circuit is configured to, for each cycle, receive in parallel input data containing n (n is an integer of 2 or more) bits, and reorder n-pieces of the input data input in n cycles into n-pieces of output data each containing n bits input in cycles different from each other. The address calculation circuit is configured to calculate write addresses for writing the n-pieces of output data into a first storage device and read addresses for reading out the n-pieces of output data from the first storage device.

A receiver is arranged for receiving a signal comprising an interleaved symbol stream. The receiver comprises a convolutional deinterleaver comprising a plurality of delay portions each of which is arranged to delay symbols from the symbol stream from an input to an output by a different amount, the delay portions being arranged in a sequence. An input selector is configured to input the symbols from the symbol stream to the delay portions so that successive symbols are input in accordance with the sequence of the delay portions. An output selector configured to read the symbols from the delay portions by successively selecting the symbols from the outputs of the delay portions in accordance with the sequence of the delay portions to form a deinterleaved symbol stream.

In order provide a communication control apparatus, a radio communication apparatus, a communication control method, a radio communication method, and a program that are capable of contributing to improving a radio communication technology related to IDMA, a communication control apparatus is provided. The communication control apparatus includes a communication unit configured to communicate with a radio communication apparatus of a radio communication system using interleave division multiple access (IDMA); and a control unit configured to allocate an interleaver type of an interleaver to be used for IDMA by the radio communication apparatus.