An efficient OFDM-based system with an insufficient cyclic prefix via a novel constellation algorithm

Authors

SAEED GHAZI-MAGHREBI

DOI

10.3906/elk-1505-273

Abstract

In this paper, a new special triangular constellation scheme is introduced to replace the commonly used rectangular QAM constellation in orthogonal frequency division multiplexing (OFDM) modulation. We have shown that this new scheme has 3 major advantages with respect to the well-known QAM. The first advantage is its lower error probability performance, which results from better usage of the constellation space with longer minimum distances. The 2 other advantages are a lower peak to average power ratio (PAPR) and higher noise immunity. Both mathematical analysis and simulation results demonstrate that by applying standard channels in 2 cases, i.e. channels with AWGN and channels with burst noise and also with intersymbol interference (ISI) impairment simultaneously, the proposed constellation exhibits superior performance compared to the well-known QAM. As a result, this constellation is a good choice for high-speed and real-time OFDM multicarrier applications such as WiFi, WiMAX, DVB, and DAB at no extra cost.

Keywords

Constellation, cyclic prefix, OFDM, QAM, PAPR

First Page

2278

Last Page

2292

Recommended Citation

GHAZI-MAGHREBI, SAEED (2017) "An efficient OFDM-based system with an insufficient cyclic prefix via a novel constellation algorithm," Turkish Journal of Electrical Engineering and Computer Sciences: Vol. 25: No. 3, Article 53. https://doi.org/10.3906/elk-1505-273
Available at: https://journals.tubitak.gov.tr/elektrik/vol25/iss3/53