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Space-frequency coded (SFC) orthogonal frequencydivision multiple access (OFDMA) system is considered under partial band noise jamming (PBNJ). Analytical expressions for the bit error probability (BEP) are derived for OFDMA with and without SFC in a frequency-selective fading environment. It is shown that SFC increases the resistance of OFDMA against PBNJ and reduces the BEP considerably. Index Terms-Orthogonal frequency-division multiple access (OFDMA), partial band noise jamming (PBNJ),doi:10.1109/tvt.2005.863421 fatcat:lcagaka3k5d2tpdjdw7qcfl5la