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- W3022349711 abstract "It is very important to estimate the signal to noise ratio (SNR) of received signal and to transmit the signal effectively for the modern communication system. The performance of existing non-data-aided (NDA) SNR estimation methods are substantially degraded for high level modulation scheme such as M-ary amplitude and Amplitude phase shift keying (APSK) or quadrature amplitude modulation (QAM). In this paper, we propose a SNR estimation method which uses zero point autocorrelation of received signal per block and auto/crosscorrelation of decision feedback signal in orthogonal frequency division multiplexing (OFDM) system. Proposed method can be studied into two types; Type 1 can estimate SNR by zero point auto-correlation of decision feedback signal based on the second moment property. Type 2 uses both zero point auto-correlation and cross-correlation based on the fourth moment property. In block-by-block reception of OFDM system, these two SNR estimation methods can be possible for the practical implementation due to correlation based the estimation method and they show more stable estimation performance than the previous SNR estimation methods. Index Terms:- Auto correlation. OFDM, QAM, SNR estimation." @default.
- W3022349711 created "2020-05-13" @default.
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- W3022349711 date "2014-01-01" @default.
- W3022349711 modified "2023-09-23" @default.
- W3022349711 title "CORRELATION BASED SNR ESTIMATION IN OFDM SYSTEM" @default.
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