Performance of space-frequency coded COFDM in narrowband interference

Abstract

Channel coded orthogonal frequency-division multiplexing (COFDM) is considered under narrowband interference (NBI). Analytical expressions for the bit error probability (BEP) are derived for COFDM with and without space-frequency coding (SFC) in a frequency-selective fading environment. It is shown that SFC increases the resistance of COFDM against NBI and reduces the BEP considerably. Specific attention is paid to Digital Television Terrestrial Broadcasting (DTTB), and the associated coding gains are discussed. I. INTRODUCTION