Performance analysis of OFDMA uplink systems with symbol timing misalignment

by: Myonghee Park, Kyunbyoung Ko, Hwasun Yoo, Daesik Hong

Communications Letters, IEEE, Vol. 7, No. 8. (2003), pp. 376-378.

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Abstract

This letter presents our investigation for the effect of symbol timing errors in orthogonal frequency-division multiple access (OFDMA) uplink systems. We express the symbol timing errors between users as the symbol timing misalignments with respect to the desired user. Then, we derive an explicit expression of the signal-to-noise ratio (SNR) as a function of the maximum value of the symbol timing misalignments. Analyses and simulation results show that, to achieve an SNR of 20 dB, the maximum value of the symbol timing misalignments must be less than the cyclic prefix duration plus 6.25% of the useful symbol duration. Based on the resulting SNR degradation, we evaluate the SNR gain with guard subcarriers in order to mitigate the effect of the symbol timing misalignments.

@article{citeulike:841731, abstract = {This letter presents our investigation for the effect of symbol timing errors in orthogonal frequency-division multiple access (OFDMA) uplink systems. We express the symbol timing errors between users as the symbol timing misalignments with respect to the desired user. Then, we derive an explicit expression of the signal-to-noise ratio (SNR) as a function of the maximum value of the symbol timing misalignments. Analyses and simulation results show that, to achieve an SNR of 20 dB, the maximum value of the symbol timing misalignments must be less than the cyclic prefix duration plus 6.25\% of the useful symbol duration. Based on the resulting SNR degradation, we evaluate the SNR gain with guard subcarriers in order to mitigate the effect of the symbol timing misalignments.}, author = {Park, Myonghee and Ko, Kyunbyoung and Yoo, Hwasun and Hong, Daesik }, citeulike-article-id = {841731}, doi = {http://dx.doi.org/10.1109/LCOMM.2003.815671}, journal = {Communications Letters, IEEE}, keywords = {ofdma, symbol, synchronization, timing, uplink}, number = {8}, pages = {376--378}, posted-at = {2006-09-13 10:53:55}, priority = {2}, title = {Performance analysis of OFDMA uplink systems with symbol timing misalignment}, url = {http://dx.doi.org/10.1109/LCOMM.2003.815671}, volume = {7}, year = {2003} }

RIS record

TY - JOUR ID - citeulike:841731 L3 - citeulike-article-id:841731 TI - Performance analysis of OFDMA uplink systems with symbol timing misalignment JF - Communications Letters, IEEE VL - 7 IS - 8 SP - 376 EP - 378 N2 - This letter presents our investigation for the effect of symbol timing errors in orthogonal frequency-division multiple access (OFDMA) uplink systems. We express the symbol timing errors between users as the symbol timing misalignments with respect to the desired user. Then, we derive an explicit expression of the signal-to-noise ratio (SNR) as a function of the maximum value of the symbol timing misalignments. Analyses and simulation results show that, to achieve an SNR of 20 dB, the maximum value of the symbol timing misalignments must be less than the cyclic prefix duration plus 6.25% of the useful symbol duration. Based on the resulting SNR degradation, we evaluate the SNR gain with guard subcarriers in order to mitigate the effect of the symbol timing misalignments. KW - ofdma KW - symbol KW - synchronization KW - timing KW - uplink AU - Park, Myonghee AU - Ko, Kyunbyoung AU - Yoo, Hwasun AU - Hong, Daesik PY - 2003/// UR - http://dx.doi.org/10.1109/LCOMM.2003.815671 ER -

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