2011 International ITG Workshop on Smart Antennas最新文献

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Calibration for single-carrier preFDE transceivers based on property mapping principles 基于属性映射原理的单载波prede收发器校准
2011 International ITG Workshop on Smart Antennas Pub Date : 2011-04-05 DOI: 10.1109/WSA.2011.5741916
Mark Petermann, D. Wübben, A. Dekorsy, K. Kammeyer
{"title":"Calibration for single-carrier preFDE transceivers based on property mapping principles","authors":"Mark Petermann, D. Wübben, A. Dekorsy, K. Kammeyer","doi":"10.1109/WSA.2011.5741916","DOIUrl":"https://doi.org/10.1109/WSA.2011.5741916","url":null,"abstract":"In general, the unequal RF circuitry in the transmit and receive chains at the base station (BS) prevents the exploitation of the uplink (UL) channel estimate for proper preequalization in time division duplex (TDD) systems. To avoid additional transceiver hardware costs for matching networks, the idea of relative calibration was introduced to cope with the different effective channel impulse responses of UL and downlink (DL) by means of signal processing. However, multiple-input multiple-output (MIMO) transmission in frequency-selective channels does not allow for classical frequency-domain calibration principles based on total least squares (TLS) approaches. Consequently, more complex structured total least squares (STLS) problems must be solved. In this paper the application of the signal property mapping principle is introduced to iteratively solve the STLS calibration problem. Exemplified by simulation results for single-carrier frequency-domain pre-equalization (SC-preFDE) systems the algorithm indicates good and fast convergence behavior and effectively exploits noisy UL and DL channel measurements for system calibration.","PeriodicalId":307097,"journal":{"name":"2011 International ITG Workshop on Smart Antennas","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129742071","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: 1
Space-time ML Receiver and its reciprocal transmitter design for interference networks 干扰网络的空时ML接收机及其互反发射机设计
2011 International ITG Workshop on Smart Antennas Pub Date : 2011-04-05 DOI: 10.1109/WSA.2011.5741940
M. Vázquez, A. Pérez-Neira, M. Lagunas
{"title":"Space-time ML Receiver and its reciprocal transmitter design for interference networks","authors":"M. Vázquez, A. Pérez-Neira, M. Lagunas","doi":"10.1109/WSA.2011.5741940","DOIUrl":"https://doi.org/10.1109/WSA.2011.5741940","url":null,"abstract":"This paper examines a type of linear beamforming for communications in interference networks. First, a receiver beamformer design is derived from a Maximum Likelihood (ML) framework with Automatic Gain Control (AGC) constraints. The studied beamformer keeps the complexity of the receiver low and it is able either to remove full coherent arrivals or to enhance them when required when diferent AGC constraints are used. Second, the reciprocal transmit beamformer which is of interest for the interference networks is obtained. This dual beamformer is derivated via revisting the idea of directivity for wireless multiuser communication scenarios. Furthermore, the duality in interference networks is reviewed. Numerical simulations demonstrate the effectiveness of the studied schemes.","PeriodicalId":307097,"journal":{"name":"2011 International ITG Workshop on Smart Antennas","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125000417","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: 5
Sea clutter canceller for shipborne HF Surface Wave Radar 舰载高频面波雷达海杂波消除器
2011 International ITG Workshop on Smart Antennas Pub Date : 2011-04-05 DOI: 10.1109/WSA.2011.5741914
Anshu Gupta, T. Fickenscher
{"title":"Sea clutter canceller for shipborne HF Surface Wave Radar","authors":"Anshu Gupta, T. Fickenscher","doi":"10.1109/WSA.2011.5741914","DOIUrl":"https://doi.org/10.1109/WSA.2011.5741914","url":null,"abstract":"A new type of beamformer has been proposed which uses dynamic clutter cancellation with the help of an auxiliary beam in an external clutter limited scenario like shipborne HF Surface Wave Radar (SWR). The beamformer is compact, ensures reasonable azimuth resolution and unlike the conventional beamformers the azimuth resolution decays gracefully in low Signal to Clutter power Ratio (SCR) scenarios. It has been demonstrated that a 7 element beamformer can detect targets with Radar Cross Section (RCS) of 30 dBsm and above with an angular resolution of 4.6°.","PeriodicalId":307097,"journal":{"name":"2011 International ITG Workshop on Smart Antennas","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126796874","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
BER-based power allocation for Amplify-and-Forward and Decode-and-Forward relaying systems 基于ber的放大转发和解码转发继电系统功率分配
2011 International ITG Workshop on Smart Antennas Pub Date : 2011-02-01 DOI: 10.1109/WSA.2011.5741925
Meng Wu, D. Wübben, A. Dekorsy
{"title":"BER-based power allocation for Amplify-and-Forward and Decode-and-Forward relaying systems","authors":"Meng Wu, D. Wübben, A. Dekorsy","doi":"10.1109/WSA.2011.5741925","DOIUrl":"https://doi.org/10.1109/WSA.2011.5741925","url":null,"abstract":"In this paper, power allocation schemes are proposed for the total transmit power of the source and the relay in a triplet relaying system based on Bit Error Rate (BER) analysis. Considering Amplify-and-Forward (AF), Decode-and-Forward (DF) for relaying systems and direct transmission (DT) without relay, we perform a fair comparison with respect to their power consumption in order to achieve the same target BER at the destination. For coded systems, the relationship between the input and the output BERs of the decoder for specific channel codes is modeled by polynomials to facilitate the BER analysis. Additionally, the Feasible Relay Region (FRR) is investigated, which determines geographically when AF or DF outperforms DT.","PeriodicalId":307097,"journal":{"name":"2011 International ITG Workshop on Smart Antennas","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124474848","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: 16
The capacity region of the 3-user Gaussian interference channel with mixed strong-very strong interference 混合强-甚强干扰的三用户高斯干扰信道的容量区域
2011 International ITG Workshop on Smart Antennas Pub Date : 2010-10-23 DOI: 10.1109/WSA.2011.5741945
A. Chaaban, A. Sezgin
{"title":"The capacity region of the 3-user Gaussian interference channel with mixed strong-very strong interference","authors":"A. Chaaban, A. Sezgin","doi":"10.1109/WSA.2011.5741945","DOIUrl":"https://doi.org/10.1109/WSA.2011.5741945","url":null,"abstract":"We consider the 3-user Gaussian interference channel and provide an outer bound on its capacity region. Under some conditions, which we call the mixed strong-very strong interference conditions, this outer bound is achievable. These conditions correspond to the case where at each receiver, one transmitter is causing strong interference and the other is causing very strong interference. Therefore, we characterize the capacity region of the 3-user interference channel with mixed strong-very strong interference.","PeriodicalId":307097,"journal":{"name":"2011 International ITG Workshop on Smart Antennas","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124670355","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: 16
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