Title :
Mitigated deep faded channel with relay node allocation for MUDiv/OFDMA
Author :
Ida, Yasutoshi ; Chang-Jun Ahn ; Matsumoto, Tad ; Matsufuji, Shinya
Author_Institution :
Grad. Sch. of Sci. & Eng., Yamaguchi Univ., Ube, Japan
Abstract :
In recent, to achieve several services with the information product, high speed and high quality systems of wireless communications are demanded. To achieve this demand, orthogonal frequency division multiple access (OFDMA) has been proposed. In a wireless network, the transmitted signal of each user has independent channel fluctuation characteristics. By using this characteristic, the multiuser diversity (MUDiv) effect can be obtained, and MUDiv/OFDMA has been proposed. Before now, we have proposed a low complexity MUDiv/OFDMA. However, it degrades the system performance compared with the conventional MUDiv/OFDMA in the channel as a Pyramid model. To solve this problem, in this paper, we propose the method to mitigate the deep faded channel for a low complexity MUDiv/OFDMA with the relay node allocation.
Keywords :
OFDM modulation; diversity reception; fading channels; multi-access systems; relay networks (telecommunication); MUDiv; OFDMA; Pyramid model; independent channel fluctuation characteristics; mitigated deep faded channel; multiuser diversity effect; orthogonal frequency division multiple access; relay node allocation; system performance; transmitted signal; wireless communications; wireless network; Bit error rate; Complexity theory; Niobium; OFDM; Relays; Resource management; System performance;
Conference_Titel :
Communications (APCC), 2013 19th Asia-Pacific Conference on
Conference_Location :
Denpasar
Print_ISBN :
978-1-4673-6048-7
DOI :
10.1109/APCC.2013.6765906
