TY  - JOUR
TI  - Error performance enhancement and complexity reduction in OFDM systems via coordinate interleaving under practical impairments
AB  - In this work, subcarrier coordinate interleaving (CI) is implemented to orthogonal frequency division mul- tiplexing (OFDM) systems with the aim of both enhancing the error performance and reducing the implementation complexity. To this end, the modulated symbols are independently chosen from a modified M-ary amplitude-shift keying signal constellation under a specific CI strategy. In addition to doubling the diversity level of the original OFDM scheme, the adopted CI approach also drastically reduces the inverse fast Fourier transform (IFFT) size at the transmit side by guaranteeing the first half of the input vector to be identical with the second half at the input to the IFFT block. It is further demonstrated that the proposed system has the ability to enhance the robustness against common practical impairments such as insufficient cyclic prefix and phase noise. The closed-form expression of symbol error probability of the system is derived and confirmed with the simulation results.
AU  - Reşat, Mustafa Anıl
AU  - Tusha, Armed
AU  - Dogan Tusha, Seda
AU  - Ozyurt, Serdar
AU  - Arslan, Huseyin
DO  - 10.55730/1300-0632.4053
PY  - 2024
JO  - Turkish Journal of Electrical Engineering and Computer Sciences
VL  - 32
IS  - 1
SN  - 1300-0632
SP  - 21
EP  - 33
DB  - TRDizin
UR  - http://search/yayin/detay/1227073
ER  -