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Analysis and design of pilot-aided multicarrier systems over doubly selective channels with a local subcarrier processing constraint

Das, Sibasish
http://rave.ohiolink.edu/etdc/view?acc_num=osu1199305333

Abstract Details

2008, Doctor of Philosophy, Ohio State University, Electrical Engineering.
In the near future, the need for portable multi-antenna wireless devices supporting high data-rates in a harsh mobile environment is anticipated. Typically, in this scenario, the underlying wireless channels are time- and frequency selective, hence doubly selective (DS). Multicarrier modulation (MCM) schemes, wherein a stream of data is split into sub-streams and transmitted on a set of subcarriers in parallel, is frequently used on wireless communication systems. DS channels generate both inter-symbol interference (ISI) as well as inter-carrier interference (ICI) for MCM transmissions, thereby making the design of MCM receivers a challenging task. The challenge is compounded by strict constraints on processing power as a result of the demand for light, portable, low-power devices, and by the lack of channel state information (CSI) in practical wireless receivers. On one hand, information-theoretic analysis of MCM systems has focused on the performance of optimal MCM reception without complexity constraints. On the other hand, practical MCM receiver designs use sub-optimal techniques requiring limited processing power. Moreover, the performance limits of these practical designs is seldom compared to what is promised by optimal reception. Local subcarrier processing (LSP) using CSI acquired via pilot-aided channel estimation is arguably the most popular practical MCM receiver design technique. The LSP constraint allows the use of only a small subset of local observations and dominantICI coefficients to retrieve information transmitted on each subcarrier. We characterize the performance limits imposed by LSP-constrained reception on generic MCM schemes. Our approach provides a new framework within which the performance limits of practical reception strategies with processing complexity constraints can be characterized and compared to optimal reception for any MCM scheme.
Philip Schniter (Advisor)
137 p.
multicarrier modulation; doubly selective; wireless channels; pilot-aided transmission; ISI; ICI; achievable rate; spectral efficiency

Recommended Citations

Citations

  • Das, S. (2008). Analysis and design of pilot-aided multicarrier systems over doubly selective channels with a local subcarrier processing constraint [Doctoral dissertation, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1199305333

    APA Style (7th edition)

  • Das, Sibasish. Analysis and design of pilot-aided multicarrier systems over doubly selective channels with a local subcarrier processing constraint. 2008. Ohio State University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1199305333.

    MLA Style (8th edition)

  • Das, Sibasish. "Analysis and design of pilot-aided multicarrier systems over doubly selective channels with a local subcarrier processing constraint." Doctoral dissertation, Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=osu1199305333

    Chicago Manual of Style (17th edition)

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© 2008, all rights reserved.
This open access ETD is published by The Ohio State University and OhioLINK.