Diversity-multiplexing tradeoff for log-normal fading channels
الملخص
Although there has been a growing interest on the study of diversity-multiplexing tradeoff (DMT), the existing works are mostly restricted to the outcomes reported for Rayleigh, Rician, and Nakagami fading channels. In this paper, we investigate the optimal tradeoff in the presence of log-normal fading, which provides an accurate model for indoor wireless, optical wireless, and ultra-wideband channels. We consider a multiple-input multiple-output (MIMO) log-normal channel, derive the outage probability expression, and then present the asymptotical DMT expression. It is shown that the asymptotical maximum diversity gain tends to infinity with logarithm of signal-to-noise ratio (SNR). To have further insight, we normalize the DMT with that of single-input single-output case and express the relative asymptotical DMT of the MIMO log-normal channel as a function of the number of transmit and receive antennas. We further study DMT for finite SNRs and demonstrate convergence to the asymptotical case. Extensive numerical results are provided to corroborate the analytical derivation.
المجموعات
- الهندسة الكهربائية [2611 items ]
وثائق ذات صلة
عرض الوثائق المتصلة بواسطة: العنوان، المؤلف، المنشئ والموضوع.
-
Design and analysis framework for sparse FIR channel shortening
Al-Abbasi, Abubakr O.; Hamila, Ridha; Bajwa, Waheed U.; Al-Dhahir, Naofal ( Institute of Electrical and Electronics Engineers Inc. , 2016 , Conference Paper)A major performance and complexity limitation in broadband communications is the long channel delay spread which results in a highly-frequency-selective channel frequency response. Channel shortening equalizers (CSEs) are ... -
EM-MAC: An energy-aware multi-channel MAC protocol for multi-hop wireless networks
Sivanantha, Akhil; Hamdaoui, Bechir; Guizani, Mohsen; Cheng, Xiuzhen; Znati, Taieb (2012 , Conference Paper)We propose an energy-aware MAC protocol, referred to as EM-MAC, for multi-hop wireless networks with multi-channel access capabilities. EM-MAC relies on iMAC's efficient channel selection mechanism to resolve the medium ... -
Performance analysis of best relay selection scheme for amplify-and-forward cooperative networks in identical Nakagami-m channels
Hussain S.I.; Alouini M.-S.; Hasna , Mazen ( IEEE , 2010 , Conference Paper)In cooperative communication networks, the use of multiple relays between the source and the destination was proposed to increase the diversity gain. Since the source and all the relays must transmit on orthogonal channels, ...