Performance Analysis of OFDM Based DVB-T over Diverse Wireless Communication Channels

Presently in communication areas Digital Video Broad casting in terrestrial (DVB-T) is playing an important role for the transmission of digital video worldwide. Orthogonal frequency division multiplexing (OFDM) is becoming a popular modulation scheme for wireless communication systems to achieve high throughput, high data capacity, spectral efficiency and resilience to multipath. In OFDM the data transmission is parallel by splitting high rate serial data into low rate sub-streams. Then each sub-stream is modulated on separate subcarriers. By splitting the data into parallel streams the data rate is reduces, which results in an increase in the length of symbol duration. The robustness to channel impairments and high data rates make OFDM an efficient scheme for the DVB-T applications. In this paper we have investigated the bit error rate (BER) performance analysis of the OFDM based DVB-T 2k mode using different modulation schemes in different transmission channels.