A low complexity timing and frequency synchronization algorithm for OFDM systems

@inproceedings{citeulike:1898955, abstract = {The paper presents a low complexity discrete stochastic approximation algorithm for time and frequency synchronization in OFDM systems. The proposed technique can track the conditions of a slowly time varying channel where synchronization parameters, namely the symbol timing and frequency offset, vary slowly with time. The most important property of the proposed algorithm is its self-learning capability - it spends most of the computational effort at the global minimizer of the objective function. In particular, we show that the algorithm achieves an /spl epsiv/=(1-/spl rho/)/(1+/spl rho/) reduction in computational cost (in terms of complex multiplications to be performed), where /spl rho/=N/sub cp//N is the ratio between cyclic prefix length (N/sub cp/) and number of subcarriers (N) of the OFDM system (e.g. N=512 and N/sub cp/=64 gives /spl epsiv/=78\%). Numerical examples illustrate the synchronization accuracy of the proposed technique in terms of symbol timing and frequency offset estimation errors.}, author = {Athaudage, C. R. N. and Krishnamurthy, V. }, booktitle = {Global Telecommunications Conference, 2002. GLOBECOM '02. IEEE}, citeulike-article-id = {1898955}, journal = {Global Telecommunications Conference, 2002. GLOBECOM '02. IEEE}, keywords = {algorithm, frequency, low, ofdm, synchronization, system, time}, pages = {244--248 vol.1}, posted-at = {2007-11-11 15:35:34}, priority = {2}, title = {A low complexity timing and frequency synchronization algorithm for OFDM systems}, url = {http://ieeexplore.ieee.org/xpls/abs\_all.jsp?arnumber=1188077}, volume = {1}, year = {2002} }

TY - CONF ID - citeulike:1898955 L3 - citeulike-article-id:1898955 TI - A low complexity timing and frequency synchronization algorithm for OFDM systems T2 - Global Telecommunications Conference, 2002. GLOBECOM '02. IEEE JF - Global Telecommunications Conference, 2002. GLOBECOM '02. IEEE VL - 1 SP - 244 EP - 248 vol.1 N2 - The paper presents a low complexity discrete stochastic approximation algorithm for time and frequency synchronization in OFDM systems. The proposed technique can track the conditions of a slowly time varying channel where synchronization parameters, namely the symbol timing and frequency offset, vary slowly with time. The most important property of the proposed algorithm is its self-learning capability - it spends most of the computational effort at the global minimizer of the objective function. In particular, we show that the algorithm achieves an /spl epsiv/=(1-/spl rho/)/(1+/spl rho/) reduction in computational cost (in terms of complex multiplications to be performed), where /spl rho/=N/sub cp//N is the ratio between cyclic prefix length (N/sub cp/) and number of subcarriers (N) of the OFDM system (e.g. N=512 and N/sub cp/=64 gives /spl epsiv/=78%). Numerical examples illustrate the synchronization accuracy of the proposed technique in terms of symbol timing and frequency offset estimation errors. KW - algorithm KW - frequency KW - low KW - ofdm KW - synchronization KW - system KW - time AU - Athaudage, CRN AU - Krishnamurthy, V PY - 2002/// UR - http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1188077 ER -