The selective transmission with majority even/odd subcarriers for increasing the data transmission throughput in OFDM based cognitive radio systems

The novel method for increasing the data transmission throughput in OFDM based Cognitive Radio system was proposed. If only even or odd subcarriers are assigned to input, the symmetrical IFFT output is generated. By using the property of symmetry, only half part of OFDM symbol with even or odd data is transmitted during first half of OFDM symbol duration, another even or odd different data can be transmitted during second half of OFDM symbol duration. And the receiver can recover the data using only the received half OFDM signal. Therefore it is possible to increase the data transmission throughput. And the comparative description how the data transmission throughput can be increased is given in the view point of statistical analysis.