[BK21Plus 해외석학 초빙 세미나] Title: A STROLL ALONG SPATIAL AVENUE TO MASSIVE MIMO SQUARE AND ALL THAT...

  • 작성자 : 이은정
  • 작성일 : 2014.05.21
  • 조회수 : 16495

 일시: 2014년 5월 23일 (금)) 공학관 250호 16:00 – 17:00

 

Speaker: Prof. Lajos Hanzo

 

Title: A STROLL ALONG SPATIAL AVENUE TO MASSIVE MIMO SQUARE AND ALL THAT...

 

Abstract:

The spectacular success of MIMO systems may be attributed to the fact that the MIMO capacity increases linearly with the number of transmit antennas, provided that the number of receive antennas is equal to the number of transmit antennas. With the further proviso that the total transmit power is increased proportionately to the number of transmit antennas, a linear - rather than logarithmic -capacity increase is achieved upon increasing the transmit power[1, 2]

 “But Dr. Shannon - how can we approach this vast capacity potential in practice?” The list of practical limitations is daunting...{• How can we physically accommodate a large number of antennas on a compact mobile device,  specially multiple RF chains? • How do we circumvent or harness the signal correlation of the closely-spaced antennas? • How do we estimate the huge number of MIMO links? • What is the pilot-overhead and complexity-overhead of estimating numerous MIMO-links? Is pilot-symbol assisted coding an attractive design option? • Is there a way round high-complexity coherent detection at all in the context of large-scale MIMO systems? • Could the radical parallel computing capability of quantum communications be invoked for mitigating the complexity imposed [3]? • Or is non-coherent multiple-symbol sphere-detection a realistic design alternative, which dispenses with channel estimation? • How do we best exploit the spatial domain at all, when creating large-scale multi-functional antenna arrays?}

Many of the above-mentioned design-dilemmas and limitations might be circumvented with the aid of Spatial Modulation (SM), where only a single one of the transmit antennas is activated during any symbol interval [4, 5]. This ’win-win saga’ continues, since apart from the potential benefit of requiring only a single RF chain, SM also has the potential of implicitly conveying extra bits by inferring say log2(M) bits from the specific index of the activated transmit antenna, as discussed in [4, 5].

 

Speaker Bio:

 Lajos Hanzo is a Fellow of the Royal Academy of Engineering (FREng), FIEEE, FIET and a EURASIP Fellow. He co-authored 20 IEEE Press - John Wiley books totalling in excess of 10 000 pages on mobile radio communications, published about 1400+ research entries at IEEE Xplore, organised and chaired major IEEE conferences and has been awarded a number of distinctions. Lajos is also an IEEE Distinguished Lecturer. During 2008 - 2012 he was the Editorin-Chief of the IEEE Press and also a Chaired Prof. at Tsinghua University, Beijing. For further information on research in progress and associated publications please refer to http://wwwmobile.ecs.soton.ac.uk;