34th IEEE Sarnoff Symposium最新文献_第2页

Ant Colony Optimization approach to interference minimizing code assignment in cognitive CDMA networks 认知CDMA网络中干扰最小化编码分配的蚁群优化方法

34th IEEE Sarnoff Symposium Pub Date : 2011-05-03 DOI: 10.1109/SARNOF.2011.5876441

Mahsa Shafiee, A. J. Jahromi, H. Nia, Negin Sokhandan

引用次数: 5

Survey on an efficient, low-complex tuple search based sphere detector 基于高效、低复杂度元组搜索的球面探测器研究

34th IEEE Sarnoff Symposium Pub Date : 2011-05-03 DOI: 10.1109/SARNOF.2011.5876450

Esther P. Adeva, B. Mennenga, G. Fettweis

{"title":"Survey on an efficient, low-complex tuple search based sphere detector","authors":"Esther P. Adeva, B. Mennenga, G. Fettweis","doi":"10.1109/SARNOF.2011.5876450","DOIUrl":"https://doi.org/10.1109/SARNOF.2011.5876450","url":null,"abstract":"Nowadays, high detection complexity is known to be one of the major challenges in MIMO communications based on spatial multiplexing. Tuple search (TS) sphere detection was recently introduced, demonstrating to represent a promising approach in this context. It provides significant complexity reduction in comparison to conventional algorithms, providing in addition close to full max-log-APP BER performance. Due to the increasing multiplicity of communication standards as well as variety of mobile applications demanded by users, tackling the lack of flexibility of common receiver realizations has become an additional key challenge in MIMO detection. Aim of this work is to demonstrate that the benefit provided by the tuple search strategy is still present in a wide range of possible transmission schemes. For this purpose, a novel efficiency indicator is introduced, based on which an exhaustive analysis is performed. The existing tuple search detector has been adapted to deal with different constellation orders and transmit/receive antenna configurations. In addition, the applied MMSE strategy has been modified to support undetermined systems. The obtained results show the superiority of the proposed sphere detector under different transmission conditions, thus demonstrating its efficiency and flexibility.","PeriodicalId":339596,"journal":{"name":"34th IEEE Sarnoff Symposium","volume":"236 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121141966","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Energy efficiency gains in interference-limited heterogeneous cellular mobile radio networks with random micro site deployment 随机微站点部署干扰受限异构蜂窝移动无线网络的能源效率提高

34th IEEE Sarnoff Symposium Pub Date : 2011-05-03 DOI: 10.1109/SARNOF.2011.5876468

Henrik Klessig, A. Fehske, G. Fettweis

{"title":"Energy efficiency gains in interference-limited heterogeneous cellular mobile radio networks with random micro site deployment","authors":"Henrik Klessig, A. Fehske, G. Fettweis","doi":"10.1109/SARNOF.2011.5876468","DOIUrl":"https://doi.org/10.1109/SARNOF.2011.5876468","url":null,"abstract":"Energy efficiency considerations recently gained attention due to ecological aspects, that is to say lowering CO2 emissions and reducing energy consumption. Furthermore, it is important to assess energy efficiency improvements from an operator's point of view, since energy costs are increasing and providing ubiquitous high speed mobile access may scale up the operators' operational expenditure. One of two promising approaches to enhance a network's operation regarding energy efficiency is to utilize smaller micro cells within one large macro cell. Another approach is to regard macro base stations as coverage providers for areas in between micro cells, while reducing their maximum transmit powers to a minimum. In this paper we investigate on the energy efficiency of a heterogeneous OFDM-based mobile network in the downlink taking into account the co-channel interference based on varying traffic demand per area. Furthermore, we carry out an assessment of potential energy savings of the two approaches mentioned above. For a sufficiently large traffic demand, increasing deployment densitiy through additional micro sites may maximize a network's energy efficiency. In that case the network operates at a load of less than 50 %. Moreover, a further gain of energy efficiency of about 20 % can be achieved due to macro site transmit power reduction while still providing coverage.","PeriodicalId":339596,"journal":{"name":"34th IEEE Sarnoff Symposium","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129184674","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 51

High efficiency digital polar transmitter for cellular handsets 用于蜂窝电话的高效数字极发射机

34th IEEE Sarnoff Symposium Pub Date : 2011-05-03 DOI: 10.1109/SARNOF.2011.5876445

A. Reddy, Qing Li, Walid Ahmed, E. Kpodzo

引用次数: 0

A 19–26 GHz balanced amplifier in 130 nm CMOS technology 一种采用130纳米CMOS技术的19-26 GHz平衡放大器

34th IEEE Sarnoff Symposium Pub Date : 2011-05-03 DOI: 10.1109/SARNOF.2011.5876446

Shan He, C. Saavedra

引用次数: 3

Non-blocking memory-memory-memory Clos-network packet switch 非阻塞内存-内存-内存关闭网络分组开关

34th IEEE Sarnoff Symposium Pub Date : 2011-05-03 DOI: 10.1109/SARNOF.2011.5876437

Z. Dong, R. Rojas-Cessa

引用次数: 23

Congestion awareness in tactical wireless networks: Discerning congestion-induced losses from wireless link effects 战术无线网络中的拥塞感知:从无线链路效应中识别拥塞引起的损失

34th IEEE Sarnoff Symposium Pub Date : 2011-05-03 DOI: 10.1109/SARNOF.2011.5876434

J. Sucec, L. Wong, M. Fecko, M. Kaplan, D. Shur, S. Samtani

引用次数: 4

Further results on area under the ROC curve of energy detectors over generalized fading channels 广义衰落信道上能量检测器ROC曲线下面积的进一步结果

34th IEEE Sarnoff Symposium Pub Date : 2011-05-03 DOI: 10.1109/SARNOF.2011.5876481

S. Alam, O. Odejide, O. Olabiyi, A. Annamalai

{"title":"Further results on area under the ROC curve of energy detectors over generalized fading channels","authors":"S. Alam, O. Odejide, O. Olabiyi, A. Annamalai","doi":"10.1109/SARNOF.2011.5876481","DOIUrl":"https://doi.org/10.1109/SARNOF.2011.5876481","url":null,"abstract":"A simple measurement to analyze the signal detector's performance is desirable. Although, receiver operating characteristic (ROC) curve has long been used for characterizing system performance, area under the ROC curve (AUC) measurement provides meaningful insights of the system performance. Signal detector's performance can be characterized simply by average AUC, since average AUC varies from 0.5 to 1. In the worst case scenario, the detector's performance can be no less than 0.5 and the best can be 1. In this paper simple expression of average AUC is developed based on the kth order derivative of the moment generating function (MGF) over the generalized fading channels for no-diversity and several diversity cases. Simplified expressions are derived for maximum ratio combing (MRC), square-law combing (SLC) diversity schemes and a simple CDF based single integral expression is developed for selection combining (SC) technique. Examples are given considering the Nakagami-m and Rice channels. Our approaches are simple and analytical results are even shown using the half integer bandwidth-time product (u) and the half integer Nakagami-m fading index. Different factors affecting energy sensing has been analyzed, which can be readily used for other applications such as cognitive radio.","PeriodicalId":339596,"journal":{"name":"34th IEEE Sarnoff Symposium","volume":"159 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126645621","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 24

How to set the fractional power control compensation factor in LTE ? 如何设置LTE中的功率控制补偿因子?

34th IEEE Sarnoff Symposium Pub Date : 2011-05-03 DOI: 10.1109/SARNOF.2011.5876464

M. Coupechoux, J. Kélif

引用次数: 58

Relays-enhanced LTE-Advanced networks performance studies 中继增强LTE-Advanced网络性能研究

34th IEEE Sarnoff Symposium Pub Date : 2011-05-03 DOI: 10.1109/SARNOF.2011.5876465

Mattia Minelli, M. Coupechoux, J. Kélif, M. Ma, P. Godlewski

引用次数: 16