A Novel Method for ICI Cancellation in OFDM Systems

摘要

Inter carrier interference is a major detrimental problem in frequency selective channels. Space-time (ST) coding joined with orthogonal frequency division multiplexing (OFDM) is a vigorous transmission framework. In any case, ST-OFDM framework execution may corrupt as a result of the intercarrier interference (ICI) in recurrence particular blurring channels. To moderate the ICI, a parallel cancelation combined with a 2×1 ST code technique is used in STPC-OFDM framework. Since this new framework integrates ICI PC with channel coding gain bit-error rate (BER) execution is better contrasted with the STPC-OFDM framework with bringing down error floor in recurrence specific portable blurring channels. Besides, the Walsh-Hadamard (WH) change is additionally connected to the STTC-STPC-OFDM framework to shape a novel STTC-WH-STPC-OFDM design and enhance the general framework execution fundamentally with similar information rate, same power and enhancing other system parameters as that of STTC-STPC-OFDM frameworks.