33 results about "Interleave division multiple access" patented technology

A wireless communication device, a wireless communication method, and a program capable of contributing to improvement of wireless communication technology related to IDMA. The wireless communication device includes: a wireless communication unit that performs wireless communication using interleave division multiple access (IDMA) with another wireless communication device; and a controller that controls an interleave length in an interleave process for IDMA by the wireless communication unit.

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.

The invention belongs to the technical field of wireless communication, and specifically relates to a multi-user detection method combining approximate message passing for an interleave-division multiple access system. As an orthogonal frequency division multiplexing based on interleave-division multiple access (OFDM-IDMA) system is affected by multiple frequency offsets caused by the Doppler shift or different accuracy of a crystal oscillator of a transceiving end, but the traditional frequency offset suppression method in an orthogonal frequency division multiplexing (OFDM) system cannot adapt to the OFDM-IDMA system, therefore a multi-frequency-offset suppression method in theOFDM-IDMA system needs to be researched. The method of the invention is to adopt an approximate message passing(AMP) frequency offset detection algorithm to suppress frequency offset on the OFDM-IDMA system. By adoption of the detection method provided by the invention, the performance of the system is restored to be very close to that in the case of no frequency offset after the frequency offset compensation detection is performed.

The invention belongs to the technical field of wireless communication, in particular to an iterative inter-cell interference suppression method and device based on optimal Bayesian. The method and the device employ an OFDM (Orthogonal Frequency Division Multiplexing) signal transmission and receiving system model based on IDMA (Interleave-Division Multiple Access), signals are interleaved and modulated by an interleaver in a transmitter and then transmitted, prior information of the received signals are updated by an optimal Bayesian detection algorithm via an MUD (master user directory) and DEC (data exchange control) decoder in a receiver, the interference reduced, and soft demodulation of the signals is achieved. The device comprises an iterative inter-cell interference suppression transmitter and a receiver based on the optimal Bayesian. The method and the device can improve interference resistance of users at the edge of a cell in a heavier load system.

The present disclosure provides electronic device and method for interleaved multiple access communication. An electronic device for an interleaved multiple access control terminal comprises a processing circuit, which is configured to acquire information about interleaved multiple access communication between a receiving apparatus and a transmitting apparatus; determine configuration parameters for the transmitting apparatus based on the information, the configuration parameters comprising operation parameters of an interleaver of the transmitting apparatus, the interleaver being used to distinguish the transmitting apparatus from other transmitting apparatus; and provide the determined configuration parameters to the transmitting apparatus, so that the transmitting apparatus is configured with the transmitting parameters for communicating with the receiving apparatus.

The invention provides a cell same-frequency networking system combining an interleave division multiple access (IDMA) and an overlapped code division multiple access (OVCDMA) and a method thereof, belonging to the wireless communication network technical field. The system consists of a transmitting end and a receiving end. In the invention, neighboring cells are distinguished by means of orthogonality of an OvCDMA code word, and the homochromatic cells using the same OvCDMA code word are distinguished by an IDMA technology so as to eliminate homochromatic interference; and each cell can obtain the unique OvCDMA+IDMA cell exclusive code word, and the receiving end gives full play to the advantages of the IDMA and the OvCDMA by an iterative detection technology to eliminate the interference among the cells. In the invention, the interference between the neighboring cells is processed by the OvCDMA code word, thus achieving the purposes of eliminating the interference between the neighboring cells and simplifying the complexity of the OvCDMA technology; and the IDMA technology can help eliminate the interference among the homochromatic cells identified by the same OvCDMA code word and meet the networking demand of the homochromatic cells in larger quantity by means of the characteristics of rich multi-access resources of the IDMA technology.

There is provided an apparatus including: an acquisition unit configured to acquire an information block generated from transmission data for a user and subjected to error correction coding; and an interleaving unit configured to interleave a bit sequence of the information block using an interleaver unique to the user. The interleaving unit interleaves the bit sequence by interleaving each of two or more partial sequences obtained from the bit sequence.