Frame head sequence based channel estimating method for orthogonal frequency division multiplexing ultra-wideband system

摘要: The invention relates to a frame head sequence based channel estimating method for an orthogonal frequency division multiplexing ultra-wideband system. In the invention, low-speed reliable transmission characteristics of are fully utilized and same-phase compensation is performed in process recovering sequence, thereby eliminating part influence phase rotation caused by surplus carrier deviation timing deviation. Meanwhile, estimated value coefficient on used performing maximal ratio coherent reception improving demodulating decoding property. A bit obtained after demodulation sending end, then recovered as known end so perform estimation average coefficients, greatly reducing noise being beneficial multipath dense environment ofthe system, promoting accuracy reliability error rate system whole property