BER Reduction and Capacity Enhancement with Novel Guard Sequence Selection for Multi-Carrier Communication
Author:
Ologun Oluwaseun, Wu Shaochuan, Shah Raza Ali, Altaf Khattak Sohaib BinORCID, Nasralla Moustafa M.ORCID
Abstract
Orthogonal frequency division multiplexing (OFDM) is an efficient multicarrier scheme that uses different types of guard intervals such as cyclic prefix (CP) and known symbol padding (KSP) (zero padding (ZP), unique word (UW), etc.) in block formation. Among these guard intervals, CP varies for each block, while other guard intervals remain fixed from block to block. These guard intervals efficiently perform channel estimation, synchronization and remove inter-block interference (IBI); nevertheless, none of the existing schemes develop any relationship between the guard interval (sequence) and the data symbols on different subcarriers of the OFDM block. We present a new idea of selecting the guard interval based on the data symbols of a subset of subcarriers in the block and exploit the high auto-correlation of the selected guard sequence to improve the bit error rate (BER) performance of the system. The results based on a fair comparison show that our enhanced orthogonal frequency division multiplexing (eOFDM) scheme inherits significant improvements in BER and the capacity of a multicarrier system as compared to the existing techniques.
Funder
Natural Science Foundation of China
Subject
Electrical and Electronic Engineering,Biochemistry,Instrumentation,Atomic and Molecular Physics, and Optics,Analytical Chemistry
Reference38 articles.
1. Conceição, F., Gomes, M., Silva, V., Dinis, R., Silva, A., and Castanheira, D. (2020). A survey of candidate waveforms for beyond 5G systems. Electronics, 10. 2. Bridging the Gap Between CP-OFDM and ZP-OFDM for the Provision of Ultra-Low Latency Services in 5G;Ayadi;IEEE Syst. J.,2019 3. Maraş, M., Ayvaz, E.N., Gömeç, M., Savaşcıhabeş, A., and Özen, A. (2021). A novel GFDM waveform design based on cascaded WHT-LWT transform for the beyond 5G wireless communications. Sensors, 21. 4. A survey on beyond 5G network with the advent of 6G: Architecture and emerging technologies;Dogra;IEEE Access,2020 5. Rajatheva, N., Atzeni, I., Bicais, S., Bjornson, E., Bourdoux, A., Buzzi, S., D’Andrea, C., Dore, J.B., Erkucuk, S., and Fuentes, M. (2020). Scoring the terabit/s goal: Broadband connectivity in 6G. arXiv.
|
|