The jacobi MIMO channel

نتاج البحث: نشر في مجلةمقالةمراجعة النظراء

ملخص

This paper presents a new fading model for multi-input multi-output channels: the Jacobi fading model. It asserts that , the transfer matrix which couples the inputs into outputs, is a submatrix of an random (Haar-distributed) unitary matrix. The (squared) singular values of follow the law of the classical Jacobi ensemble of random matrices, hence the name of the channel. One motivation to define such a channel comes from multimode/multicore optical fiber communication. It turns out that this model can be qualitatively different from the Rayleigh model, leading to interesting practical and theoretical results. This paper first evaluates the ergodic capacity of the channel. Then, it considers the nonergodic case, where it analyzes the outage probability and the diversity-multiplexing tradeoff. In the case where , it is shown that at least degrees of freedom are guaranteed not to fade for any channel realization, enabling a zero-outage probability or infinite diversity order at the corresponding rates. A simple scheme utilizing (a possibly outdated) channel state feedback is provided, attaining the no-outage guarantee. Finally, noting that as increases, the Jacobi model approaches the Rayleigh model, the paper discusses the applicability of the model in other communication scenarios.

اللغة الأصليةالإنجليزيّة
رقم المقال6380619
الصفحات (من إلى)2426-2441
عدد الصفحات16
دوريةIEEE Transactions on Information Theory
مستوى الصوت59
رقم الإصدار4
المعرِّفات الرقمية للأشياء
حالة النشرنُشِر - أبريل 2013

All Science Journal Classification (ASJC) codes

  • !!Information Systems
  • !!Computer Science Applications
  • !!Library and Information Sciences

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