Title :
Performance evaluation of AMC turbo coded OFDM for 3GPP Long Term Evolution downlink system
Author :
El Makhtari, S. ; Moussaoui, Mohamed ; Samadi, Hassan
Author_Institution :
Lab. des Technol. de l´´Inf. et de la Commun., Ecole Nat. des Sci. Appl., Tangier, Morocco
Abstract :
This paper presents a performance evaluation of OFDM LTE downlink physical layer according to the latest 3GPP specifications. Particularly, adaptive modulation and coding (AMC) is described and analyzed. This is in conjunction with the turbo decoding algorithm Max-Log-Maximum A Posteriori (Max-Log-MAP) used in soft input soft output (SISO) decoders. The performance analysis is carried out in terms of bit error rate (BER) and throughput by varying parameters such as signal to noise ratio (SNR), modulation schemes, coding rates and decoding iterations number.
Keywords :
Long Term Evolution; OFDM modulation; adaptive codes; adaptive modulation; decoding; error statistics; maximum likelihood estimation; modulation coding; turbo codes; 3GPP long term evolution downlink system; AMC turbo coded OFDM; Max-Log-MAP; adaptive modulation and coding; bit error rate; coding rates; decoding iterations number; max-log-maximum a posteriori; orthogonal frequency division multiplexing; performance evaluation; signal to noise ratio; soft input soft output decoders; turbo decoding algorithm; AWGN; Decoding; Encoding; Iterative decoding; OFDM; Phase shift keying; Quadrature amplitude modulation; 3GPP LTE; Adaptive Modulation and Coding; BER; OFDM; Throughput; Turbo Coding;
Conference_Titel :
Multimedia Computing and Systems (ICMCS), 2012 International Conference on
Conference_Location :
Tangier
Print_ISBN :
978-1-4673-1518-0
DOI :
10.1109/ICMCS.2012.6320194
