Joint Detection and CFO Compensation in Asynchronous Multi-User MIMO OFDM Systems

Kotzsch, Vincent; Holfeld, Jörg; Fettweis, Gerhard

doi:10.1109/vetecs.2009.5073630

Cited by 15 publications

(17 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…On the uplink, CFO results in interference between subcarriers of an OFDM transmission. Techniques for joint detection and CFO compensation in uplink coordinated multi-cell MIMO OFDM systems have been proposed in [172].…”

Section: A System Implementationmentioning

confidence: 99%

Multi-Cell MIMO Cooperative Networks: A New Look at Interference

Gesbert

Hanly

Huang³

et al. 2010

IEEE J. Select. Areas Commun.

1,614

1,253

View full text Add to dashboard Cite

Abstract-This paper presents an overview of the theory and currently known techniques for multi-cell MIMO (multiple input multiple output) cooperation in wireless networks. In dense networks where interference emerges as the key capacitylimiting factor, multi-cell cooperation can dramatically improve the system performance. Remarkably, such techniques literally exploit inter-cell interference by allowing the user data to be jointly processed by several interfering base stations, thus mimicking the benefits of a large virtual MIMO array. Multicell MIMO cooperation concepts are examined from different perspectives, including an examination of the fundamental information-theoretic limits, a review of the coding and signal processing algorithmic developments, and, going beyond that, consideration of very practical issues related to scalability and system-level integration. A few promising and quite fundamental research avenues are also suggested.

show abstract

Section: A System Implementationmentioning

confidence: 99%

Multi-Cell MIMO Cooperative Networks: A New Look at Interference

Gesbert

Hanly

Huang³

et al. 2010

IEEE J. Select. Areas Commun.

1,614

1,253

View full text Add to dashboard Cite

show abstract

“…It has also been shown that similar theoretical advantages can be obtained with narrowband systems [4]. More recently, multi-user detection techniques have been extended to orthogonal frequency division multiplex (OFDM) systems, and to multi-input multi-output (MIMO) OFDM systems such as described in [5] and [6], respectively.…”

Section: Introductionmentioning

confidence: 94%

Multi-user detection for Inmarsat's BGAN system

Moher¹,

Zhang²,

Febvre

et al. 2010

2010 5th Advanced Satellite Multimedia Systems Conference and the 11th Signal Processing for Space Communications Workshop

View full text Add to dashboard Cite

The development and performance of a hardwareprototype multi-user detection (MUD) receiver for Inmarsat's Broadband Global Area Network (BGAN) is described. The MUD receiver is used to compensate increased adjacent channel interference due to reduced channel spacing and can simultaneously detect up to six bearers in a 200-kHz satellite subband. With this technique, the channel-spacing can be reduced from 40 kHz to 25 kHz, permitting a capacity increase of 50%. This capacity increase is achieved with an implementation loss comparable to the combined implementation loss and adjacent channel interference allowance for the non-MUD scenario. Differences between simulations and hardware implementations are discussed, as well as observed limitations on performance.

show abstract

“…The authors found that, among intercarrier interference (ICI), intersymbol interference (ISI), and interblock interference (IBI), the last two constituting timing errors were identified as the main course of performance degradation. In related work Kotzsch et al [60] and Lin [61] obtained improved Doppler shift compensation by suppressing multipath interference caused by frequency-selective fading and intercarrier interference resulting from data subcarriers.…”

Section: Time-partitioning-based Schemesmentioning

confidence: 99%

Doppler Shift Compensation Schemes in VANETs

Nyongesa¹,

Djouani²,

Olwal³

et al. 2015

Mobile Information Systems

View full text Add to dashboard Cite

Over the last decade vehicle-to-vehicle (V2V) communication has received a lot of attention as it is a crucial issue in intravehicle communication as well as in Intelligent Transportation System (ITS). In ITS the focus is placed on integration of communication between mobile and fixed infrastructure to execute road safety as well as nonsafety information dissemination. The safety application such as emergence alerts lays emphasis on low-latency packet delivery rate (PDR), whereas multimedia and infotainment call for high data rates at low bit error rate (BER). The nonsafety information includes multimedia streaming for traffic information and infotainment applications such as playing audio content, utilizing navigation for driving, and accessing Internet. A lot of vehicular ad hoc network (VANET) research has focused on specific areas including channel multiplexing, antenna diversity, and Doppler shift compensation schemes in an attempt to optimize BER performance. Despite this effort few surveys have been conducted to highlight the state-of-the-art collection on Doppler shift compensation schemes. Driven by this cause we survey some of the recent research activities in Doppler shift compensation schemes and highlight challenges and solutions as a stock-taking exercise. Moreover, we present open issues to be further investigated in order to address the challenges of Doppler shift in VANETs.

show abstract

Joint Detection and CFO Compensation in Asynchronous Multi-User MIMO OFDM Systems

Cited by 15 publications

References 9 publications

Multi-Cell MIMO Cooperative Networks: A New Look at Interference

Multi-Cell MIMO Cooperative Networks: A New Look at Interference

Multi-user detection for Inmarsat's BGAN system

Doppler Shift Compensation Schemes in VANETs

Contact Info

Product

Resources

About