A Novel Power-Efficient Scheme Spectrally and Energy Efficient (SEE) - OFDM for IM/DD Optical Systems
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2016, Vol 4, Issue 10
Abstract
Spectrally and energy efficient orthogonal frequency division multiplexing (SEE-OFDM) is an optical OFDM technique based on combining multiple asymmetrically clipped optical OFDM (ACO-OFDM) signals into one OFDM signal. By summing different components together, SEE-OFDM can achieve the same spectral efficiency as DC-biased optical OFDM (DCO-OFDM) without an energy-inefficient DC-bias. This paper introduces multiple methods for decoding a SEE-OFDM symbol and shows that an iterative decoder with hard decisions gives the best performance. Being a multi-component format, different energy allocation amongst the different components of SEE-OFDM is possible. However, equal energy allocation performs 1.5 dB better than unequal energy allocation. A hard-decision, iterative subtraction receiver can further increase performance by another 1.5 dB over soft-decision subtraction and reconstruction receivers. SEE-OFDM consistently performs 3dB or better and with higher spectral efficiency than ACO-OFDM at the same bit-error-rate (BER). Comparing other combination methods at the same BER, SEE-OFDM performs up to 3 dB better than hybrid asymmetrically clipped optical.
Authors and Affiliations
Nimitha N, Poovizhi S
Keywords
Related Articles
- EP ID EP22704
- DOI -
- Views 232
- Downloads 4
slugEXPERIMENTAL ANALYSIS OF AN EXPLOSIVE TEST CHAMBER SUBJECTED TO INTERNAL BLAST LOADING
Explosive test chambers are huge closed chambers used in research, testing of explosive materials and armor, research, and testing of nature of explosives used in military and defense weapons. The chamber is a huge, cyl...
Implementation of AAPM Model in Distributed MHealthcare System
Distributed m-health care system is used for efficient patient treatment and share personal health information among health providers. However, it brings many challenges such as data confidentiality and patients’ identi...
Automated Smart Trolley with Smart Billing Using Arduino
Shopping mall is a place where people get their daily necessities. There has been an emerging demand for quick and easy payment of bills in shopping malls. Quite often, when shopping in a supermarket shoppers are frustr...
Biodegradation of Petrochemicals by Microorganisms Isolated From Garage Soil of Gwalior Area
Bioremediation functions basically on biodegradation, which may refer to complete mineralization of organic contaminants into carbon dioxide, water, inorganic compounds, and cell protein or transformation of complex org...
Energy Efficient Cluster Based Leach Protocol Using WSN
Wireless sensor network systems will enable the reliable monitoring of a variety of environments for both civil and military applications. In this paper, we look at communication protocols, which can have significant im...