Filters








737 Hits in 4.5 sec

Gaussian Multiple Access via Compute-and-Forward

Jingge Zhu, Michael Gastpar
2017 IEEE Transactions on Information Theory  
In this paper, a multiple-access technique called CFMA (Compute-Forward Multiple Access) is proposed and analyzed.  ...  Lattice codes used under the Compute-and-Forward paradigm suggest an alternative strategy for the standard Gaussian multiple-access channel (MAC): The receiver successively decodes integer linear combinations  ...  NESTED LATTICE CODES AND COMPUTATION RATE TUPLES We consider a K-user Gaussian multiple access channel.  ... 
doi:10.1109/tit.2016.2605121 fatcat:g64sqhzhxrfanabnaobdj772jy

Enhancing Non-Orthogonal Multiple Access By Forming Relaying Broadcast Channels [article]

Jungho So, Youngchul Sung
2015 arXiv   pre-print
Based on the analysis of the achievable rate region of a RBC with decode-and-forward (DF) relaying, CF relaying, or CF relaying with dirty-paper coding (DPC) at the transmitter, the overall system performance  ...  In this paper, using relaying broadcast channels (RBCs) as component channels for non-orthogonal multiple access (NOMA) is proposed to enhance the performance of NOMA in single-input single-output (SISO  ...  When the user with good channel serves as a full-duplex relay, the BS and the two served users form a relaying broadcast channel (RBC) from the perspective of information theory [8] , [9] .  ... 
arXiv:1510.07369v1 fatcat:ju5zi43rcjgc7jeqmne6p6oikm

A Game Theoretic Model for the Gaussian Broadcast Channel [article]

Srinivas Yerramalli, Rahul Jain, Urbashi Mitra
2012 arXiv   pre-print
The behavior of rational and selfish players (receivers) over a multiple-input multiple-output Gaussian broadcast channel is investigated using the framework of noncooperative game theory.  ...  In contrast to the game-theoretic model of the Gaussian multiple access channel where the set of feasible actions for each player is independent of other players' actions, the strategies of the players  ...  For example, the Gaussian multiple access channel (MAC) has been studied extensively under this framework [3] - [6] .  ... 
arXiv:1203.3210v1 fatcat:srxmjgih55da3dlml7qrceefle

Lattice codes for the Gaussian relay channel: Decode-and-Forward and Compress-and-Forward [article]

Yiwei Song, Natasha Devroye
2012 arXiv   pre-print
That is, we derive a new achievable rate region for the two-way relay channel with direct links and compare it to existing schemes, and derive another achievable rate region for the multiple access relay  ...  We furthermore present a lattice Compress-and-Forward (CF) scheme for the Gaussian relay channel which exploits a lattice Wyner-Ziv binning scheme and achieves the same rate as the Cover-El Gamal CF rate  ...  and the multiple-access relay channel.  ... 
arXiv:1111.0084v2 fatcat:ybdzec4x6neuzca6pgitan3lci

On the Gaussian MIMO Relay Channel With Full Channel State Information

S. Simoens, O. Munoz-Medina, J. Vidal, A. del Coso
2009 IEEE Transactions on Signal Processing  
This paper addresses the problem of source and relay transmit covariance optimization on the Gaussian MIMO relay channel with full channel state information (CSI), i.e., assuming perfect knowledge of all  ...  For time division duplex (TDD) relaying, both upper and lower bounds on capacity are derived, and the transmit covariance matrices are optimized for decode-and-forward (DF) strategies with either partial  ...  ACKNOWLEDGMENT The authors would like to thank A. Hjørungnes and D. Palomar for fruitful discussions on differentiation techniques and E. Calvo for suggesting the use of the perspective function.  ... 
doi:10.1109/tsp.2009.2020744 fatcat:rj7y3kzhkbhd7gvjei3cgjr7yq

A game theoretic model for the Gaussian broadcast channel

Srinivas Yerramalli, Rahul Jain, Urbashi Mitra
2012 2012 IEEE International Symposium on Information Theory Proceedings  
The behavior of rational and selfish players (receivers) over a multiple-input multiple-output Gaussian broadcast channel is investigated using the framework of noncooperative game theory.  ...  In contrast to the game-theoretic model of the Gaussian multiple access channel where the set of feasible actions for each player is independent of other players' actions, the strategies of the players  ...  For example, the Gaussian multiple access channel (MAC) has been studied extensively under this framework [3] - [6] .  ... 
doi:10.1109/isit.2012.6283970 dblp:conf/isit/YerramalliJM12 fatcat:tgdzp2dpqfd2dizuaveqlafhim

The approximate sum capacity of the symmetric Gaussian K-user interference channel

Or Ordentlich, Uri Erez, Bobak Nazer
2012 2012 IEEE International Symposium on Information Theory Proceedings  
This paper develops a new framework for lattice interference alignment, based on the compute-and-forward approach.  ...  As part of the analysis, it is shown that decoding K linear combinations of the codewords can approach the sum capacity of the K-user Gaussian multiple-access channel up to a gap of no more than K log(  ...  MULTIPLE-ACCESS VIA COMPUTE-AND-FORWARD This section introduces a new coding technique for reliable communication over the K-user Gaussian multiple-access channel.  ... 
doi:10.1109/isit.2012.6283726 dblp:conf/isit/OrdentlichEN12 fatcat:3ksbbjfqzngyriotwdxhey3gru

Nonorthogonal Multiple Access for 5G and Beyond

Yuanwei Liu, Zhijin Qin, Maged Elkashlan, Zhiguo Ding, Arumugam Nallanathan, Lajos Hanzo
2017 Proceedings of the IEEE  
Non-orthogonal multiple access (NOMA), which has been recently proposed for the 3rd generation partnership projects long-term evolution advanced (3GPP-LTE-A), constitutes a promising technology of addressing  ...  By doing so, significant bandwidth efficiency enhancement can be attained over conventional orthogonal multiple access (OMA) techniques.  ...  Information at the Transmitter D2D Device-to-Device DF Decode-and-Forward DL Downlink DPC Dirty-Paper Coding FD Full-Duplex FDMA Frequency Division Multiple Access IDMA Leave Division Multiple  ... 
doi:10.1109/jproc.2017.2768666 fatcat:kpplouvkwbfurhitb3plb3y73m

The Gaussian Interference Relay Channel: Improved Achievable Rates and Sum Rate Upperbounds Using a Potent Relay [article]

Ye Tian, Aylin Yener
2011 arXiv   pre-print
We also construct a nested lattice code based compute-and-forward relaying scheme, which outperforms other relaying schemes when the direct link is weak.  ...  We consider the Gaussian interference channel with an intermediate relay as a main building block for cooperative interference networks.  ...  Specifically, relay nodes can decode the modulo-sum of transmitted messages and forward the sum to the destinations, thus reducing the effect of the multiple access interference of the signal received  ... 
arXiv:1102.0043v1 fatcat:gb4itfrflzfdzgwvszby4iv7ba

Lattice Codes for the Gaussian Relay Channel: Decode-and-Forward and Compress-and-Forward

Yiwei Song, Natasha Devroye
2013 IEEE Transactions on Information Theory  
That is, we derive a new achievable rate region for the two-way relay channel with direct links and compare it to existing schemes, and derive a new achievable rate region for the multiple access relay  ...  Index Terms-lattice codes, relay channel, Gaussian relay channel, decode and forward, compress and forward  ...  and the multiple access relay channel.  ... 
doi:10.1109/tit.2013.2259139 fatcat:g4hywvrs5rd25fztprwlmqgi3y

Non-Orthogonal Multiple Access for 5G and Beyond [article]

Yuanwei Liu, Zhijin Qin, Maged Elkashlan, Zhiguo Ding, Arumugam Nallanathan, Lajos Hanzo
2018 arXiv   pre-print
Non-orthogonal multiple access (NOMA), which has been recently proposed for the 3rd generation partnership projects long-term evolution advanced (3GPP-LTE-A), constitutes a promising technology of addressing  ...  By doing so, significant bandwidth efficiency enhancement can be attained over conventional orthogonal multiple access (OMA) techniques.  ...  invoking both decode-and-forward (DF) relaying, as well as compress-and-forward (CF) relaying with/without dirty-paper coding (DPC).  ... 
arXiv:1808.00277v1 fatcat:jgxujmeifbedhlul2szgkgsayq

The Approximate Sum Capacity of the Symmetric Gaussian $K$ -User Interference Channel

Or Ordentlich, Uri Erez, Bobak Nazer
2014 IEEE Transactions on Information Theory  
This paper develops a new framework for lattice interference alignment, based on the compute-and-forward approach.  ...  As part of the analysis, it is shown that decoding K linear combinations of the codewords can approach the sum capacity of the K-user Gaussian multiple-access channel up to a gap of no more than K/2 log  ...  MULTIPLE-ACCESS VIA COMPUTE-AND-FORWARD This section introduces a new coding technique for reliable communication over the K-user Gaussian multiple-access channel.  ... 
doi:10.1109/tit.2014.2316136 fatcat:my2pzcyflvctrnsgkem3svt6ta

The Gaussian Interference Relay Channel: Improved Achievable Rates and Sum Rate Upperbounds Using a Potent Relay

Ye Tian, Aylin Yener
2011 IEEE Transactions on Information Theory  
We also construct a nested lattice code based compute-and-forward relaying scheme, which outperforms other relaying schemes when the direct link is weak.  ...  We consider the Gaussian interference channel with an intermediate relay as a main building block for cooperative interference networks.  ...  Specifically, relay nodes can decode the modulo-sum of transmitted messages and forward the sum to the destinations, thus reducing the effect of the multiple access interference of the signal received  ... 
doi:10.1109/tit.2011.2119790 fatcat:wftnudrcknedlcj2hrbjk75yp4

Rate-Splitting Multiple Access: Fundamentals, Survey, and Future Research Trends [article]

Yijie Mao, Onur Dizdar, Bruno Clerckx, Robert Schober, Petar Popovski, H. Vincent Poor
2022 arXiv   pre-print
Rate-splitting multiple access (RSMA) has emerged as a novel, general, and powerful framework for the design and optimization of non-orthogonal transmission, multiple access (MA), and interference management  ...  a wide range of network loads (including both underloaded and overloaded regimes) and user channel conditions.  ...  For the MIMO/multiple-input single-output (MISO) Gaussian broadcast channel (BC), dirty paper coding (DPC) is the only known strategy for achieving the capacity region [9] when the channel state information  ... 
arXiv:2201.03192v2 fatcat:z3ujjbqwxzc5dbgu3ganoqomae

Rate-Splitting Multiple Access for Downlink Multiuser MIMO: Precoder Optimization and PHY-Layer Design [article]

Anup Mishra, Yijie Mao, Onur Dizdar, Bruno Clerckx
2021 arXiv   pre-print
Rate-Splitting Multiple Access (RSMA) has recently appeared as a powerful and robust multiple access and interference management strategy for downlink Multi-user (MU) multi-antenna communications.  ...  Conventional MU-MIMO based on linear precoders and Non-Orthogonal Multiple Access (NOMA) schemes are considered as baselines.  ...  To overcome the limitations of SDMA and NOMA, a novel multiple access scheme, called Rate-Splitting Multiple Access (RSMA) is introduced in [10] for Multiple-Input Single-Output (MISO) BC. 1 MU-MIMO  ... 
arXiv:2105.07362v1 fatcat:nouuqftjvncqzoloxfmlhvat3q
« Previous Showing results 1 — 15 out of 737 results