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The performance of the automatic repeat request-dynamic decode and forward (ARQ-DDF) cooperation protocol is analyzed in two distinct scenarios. The first scenario is the multiple access relay (MAR) channel where a single relay is dedicated…

Information Theory · Computer Science 2007-07-16 Kambiz Azarian , Hesham El Gamal , Philip Schniter

This paper investigates the diversity order of the minimum mean squared error (MMSE) based optimal transceivers in multiple-input multiple-output (MIMO) amplify-and-forward (AF) relaying systems. While the diversity-multiplexing tradeoff…

Information Theory · Computer Science 2013-12-17 Changick Song , Cong Ling

In this work, we analyze the fundamental performance tradeoff of the single-antenna Automatic Retransmission reQuest (ARQ) Z-interference channel (ZIC). Specifically, we characterize the achievable three-dimensional tradeoff between…

Information Theory · Computer Science 2012-04-04 Mohamed S. Nafea , D. Hamza , Karim G. Seddik , Mohammed Nafie , Hesham El Gamal

A general fading model for multipath channels between two non-parallel continuous-aperture arrays (CAPAs) is proposed. Building on this model, the performance of diversity and multiplexing achieved by CAPAs over fading channels is analyzed.…

Signal Processing · Electrical Eng. & Systems 2025-03-31 Chongjun Ouyang , Zhaolin Wang , Xingqi Zhang , Yuanwei Liu

Most communication systems use some form of feedback, often related to channel state information. In this paper, we study diversity multiplexing tradeoff for both FDD and TDD systems, when both receiver and transmitter knowledge about the…

Information Theory · Computer Science 2014-07-15 Vaneet Aggarwal , Ashutosh Sabharwal

Rate and diversity impose a fundamental tradeoff in communications. This tradeoff was investigated for Intersymbol Interference (ISI) channels in [4]. A different point of view was explored in [1] where high-rate codes were designed so that…

Information Theory · Computer Science 2007-09-25 S. Dusad , S. N. Diggavi

A finite blocklenth analysis of the diversity-multiplexing tradeoff is presented, based on nonasymptotic bounds on the maximum channel coding rate of multiple-antenna block-memoryless Rayleigh-fading channels.The bounds in this paper allow…

Information Theory · Computer Science 2016-11-17 Johan Östman , Wei Yang , Giuseppe Durisi , Tobias Koch

In this paper we are concentrating on the diversity-multiplexing gain trade-off (DMT) of some space-time lattice codes. First we give a DMT bound for lattice codes having restricted dimension. We then recover the well known results of the…

Information Theory · Computer Science 2011-05-19 Roope Vehkalahti , Hsiao-feng Lu

The degrees of freedom (DoF) of the $K$-user multiple-input multiple-output (MIMO) interference channel are studied when perfect, but delayed channel state information is available at the transmitter side (delayed CSIT). Recent works have…

Information Theory · Computer Science 2016-11-18 Marc Torrellas , Adrian Agustin , Josep Vidal

We study the tradeoff between reliability, data rate, and delay for half-duplex MIMO multihop networks that utilize the automatic-retransmission-request (ARQ) protocol both in the asymptotic high signal-to-noise ratio (SNR) regime and in…

Information Theory · Computer Science 2016-11-18 Yao Xie , Deniz Gunduz , Andrea J. Goldsmith

We consider a single antenna narrowband multiple access channel in which users send training sequences to the base station and scheduling is performed based on minimum mean square error (MMSE) channel estimates. In such a system, there is…

Information Theory · Computer Science 2011-12-13 Jonathan Scarlett , Jamie Evans , Subhrakanti Dey

This paper investigates the Diversity-Multiplexing gain Trade-off (DMT) of a training based reciprocal Single Input Multiple Output (SIMO) system, with (i) perfect Channel State Information (CSI) at the Receiver (CSIR) and noisy CSI at the…

Information Theory · Computer Science 2012-11-05 B. N. Bharath , Chandra R. Murthy

In a multi-input multi-output (MIMO) full-duplex network, where an in-band full-duplex infrastruc- ture node communicates with two half-duplex mobiles supporting simultaneous up- and downlink flows, the inter-mobile interference between the…

Information Theory · Computer Science 2015-01-19 Jingwen Bai , Chris Dick , Ashutosh Sabharwal

Discrete multi-tone transmission (DMT) is a promising candidate for future 400G data center interconnects. Eight channels, each carrying 56 Gb/s of data can be combined in a 50-GHz channel grid to form a 400 Gb/s superchannel. For a fully…

Signal Processing · Electrical Eng. & Systems 2020-09-23 Annika Dochhan , Helmut Griesser , Nicklas Eiselt , Michael Eiselt , Jörg-Peter Elbers

The idea of Media-based Modulation (MBM) is to embed information in the variations of the transmission media (channel states). Using an RF closure with $w$ RF walls, MBM creates a set of $2^w$ select-able states for the end-to-end channel.…

Information Theory · Computer Science 2022-02-08 Ehsan Seifi , Amir K. Khandani

In this paper we consider the diversity-multiplexing gain tradeoff (DMT) of so-called minimum delay asymmetric space-time codes. Such codes are less than full dimensional lattices in their natural ambient space. Apart from the multiple…

Information Theory · Computer Science 2021-02-22 Roope Vehkalahti , Laura Luzzi

In this paper, an outage limited MIMO channel is considered. We build on Zheng and Tse's elegant formulation of the diversity-multiplexing tradeoff to develop a better understanding of the asymptotic relationship between the probability of…

Information Theory · Computer Science 2007-07-16 Kambiz Azarian , Hesham El Gamal

For any $n_t$ transmit, $n_r$ receive antenna ($n_t\times n_r$) MIMO system in a quasi-static Rayleigh fading environment, it was shown by Elia et al. that linear space-time block code-schemes (LSTBC-schemes) which have the non-vanishing…

Information Theory · Computer Science 2013-04-30 K. Pavan Srinath , B. Sundar Rajan

We study a simple question: when are dynamic relaying strategies essential in optimizing the diversity-multiplexing tradeoff (DMT) in half-duplex wireless relay networks? This is motivated by apparently two contrasting results even for a…

Information Theory · Computer Science 2016-11-18 Ritesh Kolte , Ayfer Özgür , Suhas Diggavi

Studies of the MISO Broadcast Channel (BC) with delayed Channel State Information at the Transmitter (CSIT) have so far focused on the sum-rate and Degrees-of-Freedom (DoF) region analysis. In this paper, we investigate for the first time…

Information Theory · Computer Science 2014-11-10 Bruno Clerckx , David Gesbert