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1 results about "Interleaved frequency division multiple access" patented technology
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E. Costa. Egon Schulz. The interleaved frequency division multiple access (IFDMA) scheme is based on compression, repetition and subsequent user dependent frequency shift of a modulated signal. Multiple access is enabled by the assignment of overlapping but mutually orthogonal subcarriers to each user.
A low complexity multi-user information processing method for an interleaved frequency division multiple access system
PendingCN122120087AError preventionMulti-frequency code systemsInformation processingSystem capacity
The application relates to the technical field of communication, in particular to a low-complexity multi-user information processing method for an interleaved frequency division multiple access system, which comprises the following steps: a receiving end receives receiving signals of multiple time slots; for each time slot, an iterative processing is performed on the receiving signal by using a multi-user cross-domain orthogonal approximate message passing receiver to obtain a decoding signal after the iterative processing; and the decoding signal is determined as sending information of each user. The method can significantly reduce the calculation complexity of multi-user detection, improve the reliability of multi-user detection, avoid error propagation, provide a basis for system capacity analysis and optimal coding design, realize a breakthrough in theoretical performance, and further improve the overall transmission performance of the system while maintaining low complexity.
Owner:XIDIAN UNIV