Conference Paper

Algorithm and VLSI architecture for linear MMSE detection in MIMO-OFDM systems

Integrated Syst. Lab., ETH, Zurich
DOI: 10.1109/ISCAS.2006.1693531 Conference: International Symposium on Circuits and Systems (ISCAS 2006), 21-24 May 2006, Island of Kos, Greece
Source: DBLP

ABSTRACT The paper describes an algorithm and a corresponding VLSI architecture for the implementation of linear MMSE detection in packet-based MIMO-OFDM communication systems. The advantages of the presented receiver architecture are low latency, high-throughput, and efficient resource utilization, since the hardware required for the computation of the MMSE estimators is reused for the detection. The algorithm also supports the extraction of soft information for channel decoding

Full-text

Available from: Andreas Peter Burg, Jun 12, 2015
1 Follower
 · 
143 Views
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: The emerging massive/large-scale multiple-input multiple-output (LS-MIMO) systems that rely on very large antenna arrays have become a hot topic of wireless communications. Compared to multi-antenna aided systems being built at the time of writing, such as the long-term evolution (LTE) based fourth generation (4G) mobile communication system which allows for up to eight antenna elements at the base station (BS), the LS-MIMO system entails an unprecedented number of antennas, say 100 or more, at the BS. The huge leap in the number of BS antennas opens the door to a new research field in communication theory, propagation and electronics, where random matrix theory begins to play a dominant role. Interestingly, LS-MIMOs also constitute a perfect example of one of the key philosophical principles of the Hegelian Dialectics, namely that ``quantitative change leads to qualitative change''. In this treatise, we provide a recital on the historic heritages and novel challenges facing LS-MIMOs from a detection perspective. Firstly, we highlight the fundamentals of MIMO detection, including the nature of co-channel interference (CCI), the generality of the MIMO detection problem, the received signal models of both linear memoryless MIMO channels and dispersive MIMO channels exhibiting memory, as well as the complex-valued versus real-valued MIMO system models. Then, an extensive review of the representative MIMO detection methods conceived during the past fifty years (1965-2015) is presented, and relevant insights as well as lessons are inferred for the sake of designing complexity-scalable MIMO detection algorithms that are potentially applicable to LS-MIMO systems. Furthermore, we divide the LS-MIMO systems into two types, and elaborate on the distinct detection strategies suitable for each of them. The type-I LS-MIMO corresponds to the case where the number of active users is much smaller than the number of BS antennas, which is currently the mainstream definition of LS-MIMO. The type-II LS-MIMO corresponds to the case where the number of active users is comparable to the number of BS antennas. Finally, we discuss the applicability of existing MIMO detection algorithms in LS-MIMO systems, and review some of the recent advances in LS-MIMO detection.
    IEEE Communications Surveys &amp Tutorials 03/2015; · 6.49 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: The authors consider the link of parallel profiles with linear dependencies (PARALIND) model with multiple-input multiple-output orthogonal frequency division multiplexing receiver. The authors derive a PARALIND-based blind receiver algorithm that has much close performance to non-blind minimum mean-squared error and it has better performance than constant modulus method. Neither the channel state information nor statistical characteristic is a necessity for the presented PARALIND algorithm, whereas the proposed algorithm distinctively supports small sample sizes. Numerical results verify its useful behaviour.
    IET Communications 03/2011; 5(5):606-611. DOI:10.1049/iet-com.2010.0246 · 0.72 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: This paper presents RTL design of several blocks in MIMO WLAN system. Designs have to conform to multi-mode operation coexist and support backward compatibility with legacy WLAN defined by standard. Low latency, high speed, and low hardware cost implementation will be explained briefly in this paper. Furthermore, comparison with other works/designs also described to show our design advantages.
    Instrumentation, Communications, Information Technology, and Biomedical Engineering (ICICI-BME), 2013 3rd International Conference on; 01/2013