Efficient Cooperative Diversity Schemes and Radio Resource Allocation for IEEE 802.16j

Can, Başak; Yanıkömeroğlu, Halim; Onat, Furuzan Atay; Carvalho, Elisabeth de; Yomo, Hiroyuki

doi:10.1109/wcnc.2008.12

Cited by 49 publications

(47 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We focus on these modulation schemes as they are among the most popular schemes in wireless networks [6]. Deciding on which modulation to be used is beyond the scope of this paper and can be found in [3], [4], [7, pp. 54-60].…”

Section: System Modelmentioning

confidence: 99%

“…In the case of fixed relays deployed by the operator, R can be installed at strategic locations, and as a result, the S-R link can be made very reliable. Therefore, the S-R link is assumed to cause negligible errors, for all practical purposes [3].…”

Section: System Modelmentioning

confidence: 99%

“…Then, the signals from the MRC combiners are decoded one-by-one until a packet is decoded correctly, with the help of a cyclic redundancy check (CRC) scheme. In [3], S has full channel state information (CSI) of the links S-D and R-D, and selection diversity is achieved by transmitting only through the link that achieves the highest throughput.…”

Section: Snr-based Selection Combining and Ber-based Selection Cmentioning

confidence: 99%

“…In [3] and [4], it is shown that the average throughput of the wireless network can be significantly increased if adaptive modulation and coding is implemented in cooperative relaying. In order to achieve spatial diversity for signals with different modulation levels, selection combining (SC) is used, since this is the least complex diversity combining scheme [3], [4]. Although the literature is rich in the BER performance analysis of conventional SC [5], as far as we know, it is limited to the case of combining signals with the same modulation level.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Performance Analysis of SNR-Based Selection Combining and BER-Based Selection Combining of Signals with Different Modulation Levels in Cooperative Communications

Sediq

Yanıkömeroğlu

2009

2009 IEEE 70th Vehicular Technology Conference Fall

Self Cite

View full text Add to dashboard Cite

Abstract-Cooperative relaying introduces spatial diversity through the creation of a virtual antenna array. The vast majority of the research in digital cooperative relaying assumes the modulation level used by both the source and relay to be the same. This assumption does not necessarily hold when adaptive modulation is implemented. In conventional selection combining, the branch with the highest SNR is chosen; we refer to this scheme as SNRbased selection combining (SNR-SC). In this paper, we introduce BER-based selection combining (BER-SC), as an alternative to SNR-SC, to be used in cooperative communications when a relay may use a modulation level different than that of the source. We provide BER performance analysis for the SNR-SC and BER-SC schemes and show that BER-SC significantly outperforms SNR-SC, without any increase in complexity. Moreover, we analytically quantify the gain achieved by using BER-SC over SNR-SC through asymptotic approximation. We note that BER-SC and SNR-SC schemes are identical when the received signals belong to the same modulation level.

show abstract

Section: System Modelmentioning

confidence: 99%

Section: System Modelmentioning

confidence: 99%

Section: Snr-based Selection Combining and Ber-based Selection Cmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Performance Analysis of SNR-Based Selection Combining and BER-Based Selection Combining of Signals with Different Modulation Levels in Cooperative Communications

Sediq

Yanıkömeroğlu

2009

2009 IEEE 70th Vehicular Technology Conference Fall

Self Cite

View full text Add to dashboard Cite

show abstract

“…This introduces a third tradeoff between the gain SE the RS's can provide by boosting SINR and loss in SE the RS cause due to multiplexing with BS. Most of the studies on RS enhanced ODCN report the advantage of relays assuming centralized resource allocation scenario and the heavy amount of signaling required to implement an interference mitigation technique is neglected in their analysis [4][5][6]. Therefore, in this paper we consider system without any feedback or cooperation based interference mitigation techniques i.e.…”

Section: Introductionmentioning

confidence: 99%

A new performance characterization framework for Deployment Architectures of next generation distributed cellular networks

Imran

Tafazolli

2010

21st Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications

View full text Add to dashboard Cite

Adaptive BU association and resource allocation in integrated PON‐WiMAX networks

Gong¹,

Lin²,

Ho³

et al. 2010

Wireless Communications

View full text Add to dashboard Cite

This paper addresses the issues of Base station—User Association and Resources Allocation (BUA‐RA) in OFDM‐TDMA based broadband wireless access (BWA) networks under passive optical networks (PON)‐WiMAX integration. With the powerful coordination capability at the optical line terminal (OLT), a key technology of inter‐cell cooperative transmission (CT) is incorporated in the integrated network architecture, which is called cooperative PON‐WiMAX network (CPWN). To achieve an efficient integration and inter‐cell cooperative transmission in the CPWNs, the BUA‐RA scheme is critical to the Quality of Service (QoS) provisioning for each user. In order to minimize the network resource usage, we provide three new BUA‐RA schemes which first time employ the cooperative transmission in a multi‐cell BWA network. The three schemes are designed for three kinds of subscribers with different moving types, and can be adaptively applied based on the network load. Simulations are conducted to verify the proposed BUA‐RA schemes by comparing with those without cooperative transmission technology. Our results demonstrate the efficiency of our proposed schemes, which are based on mathematical formulations and linearization. Copyright © 2010 John Wiley & Sons, Ltd.

show abstract

Efficient Cooperative Diversity Schemes and Radio Resource Allocation for IEEE 802.16j

Cited by 49 publications

References 9 publications

Performance Analysis of SNR-Based Selection Combining and BER-Based Selection Combining of Signals with Different Modulation Levels in Cooperative Communications

Performance Analysis of SNR-Based Selection Combining and BER-Based Selection Combining of Signals with Different Modulation Levels in Cooperative Communications

A new performance characterization framework for Deployment Architectures of next generation distributed cellular networks

Adaptive BU association and resource allocation in integrated PON‐WiMAX networks

Contact Info

Product

Resources

About