Low Complexity Joint Channel Estimation and Decoding for LDPC Coded MIMO-OFDM Systems


X. Xu, R. Mathar,


        In this paper, a joint iterative channel estimation and low-density parity-check (LDPC) decoding algorithm based on factor graphs and the sum-product algorithm is proposed for orthogonal frequency division multiplexing (OFDM) systems employing multiple transmit and receive antennas (MIMO). By modeling time-varying frequency-selective fading channels as autoregressive (AR) processes and approximating messages as Gaussian pdf, this receiver algorithm is able to maintain a low complexity. Moreover, with the help of strong channel coding, pilot overhead can be significantly reduced.

BibTEX Reference Entry 

	author = {Xiang Xu and Rudolf Mathar},
	title = "Low Complexity Joint Channel Estimation and Decoding for {LDPC} Coded MIMO-OFDM Systems",
	pages = "1-5",
	booktitle = "{IEEE} Vehicular Technology Conference Spring (VTC-Spring) 2011",
	address = {Budapest, Hungary},
	month = May,
	year = 2011,
	hsb = hsb999910038280,


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