{"title":"Outage Performance Study of Cognitive Multi-antenna Relay Network with Physical-Layer Network Coding over Nakagami-m Fading Channels","authors":"Yingdong Zhu, Jia Liu, Xiao-Jiao Tao, Z. Feng","doi":"10.1109/MILCOM.2013.261","DOIUrl":"https://doi.org/10.1109/MILCOM.2013.261","url":null,"abstract":"In this paper, we investigate the outage performance of physical-layer network coding (PNC) based cognitive multi-antenna relay network (CMRN) over the Nakagami-m channel. In the spectrum sharing systems, secondary users (SUs) are located on two different primary user (PU) coverage areas. Secondary transceiver nodes exchange their information with the assistance of a multi-antenna relay using PNC protocol. By applying the interference temperature (IT) constraints at the transceiver nodes and relay nodes in secondary systems, we analyze the outage performance in underlay spectrum sharing with the best relay selection criterion. The cumulative distribution function (CDF) of the signal to noise ratio (SNR) for each link are derived to obtain the tight upper bound on the outage probability of the secondary relay system. Simulations results demonstrate the validity and accuracy of the theoretical analysis.","PeriodicalId":379382,"journal":{"name":"MILCOM 2013 - 2013 IEEE Military Communications Conference","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132699275","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}
{"title":"End-to-End Applications and Algorithm Integration (E2A2I) Method and Architecture","authors":"P. Hershey, M. Hirsch, Kate Maxwell","doi":"10.1109/MILCOM.2013.122","DOIUrl":"https://doi.org/10.1109/MILCOM.2013.122","url":null,"abstract":"DoD manned and unmanned air systems require multiple mission phases, each with unique procedures, algorithms and checklists that are implemented through a variety of hardware and software mechanisms, all within the same mission. This approach is not efficient with respect to mission processing, staffing, and training. The End-to-End Applications and Algorithm Integration (E2A2I) Method and Architecture addresses this issue using a checklist application that receives a complete mission checklist for all mission phases (e.g., pre-mission, launch and recovery, on-mission, post-mission, and maintenance) from a data broker enforcement entity that has access to a data store. This data store contains many checklists in support of multiple diverse missions. The E2A2I application automatically executes the checklists, invoking other mission applications in order of their mission usage. The E2A2I application runs on a mobile computing device with software services that invoke one mobile application from another so that the same applications can be used in multiple mission phases and for multiple missions.","PeriodicalId":379382,"journal":{"name":"MILCOM 2013 - 2013 IEEE Military Communications Conference","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133479780","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}
{"title":"Resource Block Based Precoding Schemes for Suppressing Out-of-Band Emission","authors":"Juan Fang, Zihao You, I. Lu, Jialing Li, Rui Yang","doi":"10.1109/MILCOM.2013.265","DOIUrl":"https://doi.org/10.1109/MILCOM.2013.265","url":null,"abstract":"Orthogonal Frequency Division Multiplexing (OFDM) systems suffer from large out-of-band emission (OOBE). As one of the approaches to suppress the OOBE, the precoding technique is able to achieve significant OOBE suppression with a small spectral efficiency loss and does not depend on the input data. In this paper, a low-complexity individual precoded OFDM (I-P-OFDM) by precoding each contiguous frequency band independently is presented. Furthermore, two resource block (RB) based precoding schemes, namely, the U-RB-P-OFDM and NU-RB-P-OFDM are presented. The RB structures utilized in these two schemes enables mitigation of the precoding matrix dependency on the spectrum allocation. Numerical results show that all three schemes can achieve satisfying spectrum containment without any degradation in BER performance, and provide various tradeoffs between spectral efficiency, computational complexity, and PAPR performance.","PeriodicalId":379382,"journal":{"name":"MILCOM 2013 - 2013 IEEE Military Communications Conference","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134455703","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}
{"title":"Two-Way Full-Duplex Amplify-and-Forward Relaying","authors":"Xilin Cheng, Bo Yu, Xiang Cheng, Liuqing Yang","doi":"10.1109/MILCOM.2013.9","DOIUrl":"https://doi.org/10.1109/MILCOM.2013.9","url":null,"abstract":"Full-duplex transmission is a promising technique to enhance the capacity of communication systems. In this paper, we investigate two-way amplify-and-forward (AF) relay systems in the full-duplex scenario. Compared with the traditional half-duplex AF relaying, the full-duplex system uses only a single phase to complete the two-way or bidirectional transmission and has the potential to achieve higher spectral efficiency. In order to further improve the system performance, the transmit power is optimized among the source nodes and the relay node. Numerical results are provided to compare the performance of the full-duplex system and the half-duplex system in terms of the average achievable rate. The effect of residual self-interference introduced by full-duplex radios and the benefits of transmit power optimization are also illustrated.","PeriodicalId":379382,"journal":{"name":"MILCOM 2013 - 2013 IEEE Military Communications Conference","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133027356","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}
{"title":"A Non-cooperative Game to Coordinate the Coverage of Two Communications UAVs","authors":"P. Charlesworth","doi":"10.1109/MILCOM.2013.119","DOIUrl":"https://doi.org/10.1109/MILCOM.2013.119","url":null,"abstract":"This paper considers the optimal placement of two UAVs that are providing backbone communications to a community of ground mobiles. The continuous movement of the ground mobiles motivates the UAVs to periodically relocate to maximize their joint coverage. The optimum locations for the two UAVs are decided by the outcome of a non-cooperative game. In this game the UAVs are the players, the set of possible locations are their strategies, and the number of ground mobiles uniquely covered by each UAV are their payoffs. Using game theory implies that the UAVs compete for coverage of mobiles in a similar manner to two companies competing for market share. The UAVs are power limited. Some of this power needs to be assigned to an inter-UAV link, placing constraints on the power available to support mobiles. Game theory permits decisions about navigation and radio resource to be made on-board the UAV, removing the need for a central planning function and reducing the associated communications traffic. The move towards on-board decision making allows the UAVs to act with greater autonomy where this is appropriate, for example if the control links are unavailable. This paper compares the results of the two-UAV game to a benchmark of a single UAV that can assign all available power to supporting mobiles. Initial results indicate that the two-UAV game performs favourably against the benchmark. The paper starts with a short introduction to game theory. It describes how the non-cooperative game is constructed and shows the results of simulations. It uses these results to identify the desirable characteristics for a two-UAV system and comments on potential improvements to the game.","PeriodicalId":379382,"journal":{"name":"MILCOM 2013 - 2013 IEEE Military Communications Conference","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115541371","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}
{"title":"Multiple-Access Interference Mitigation and Iterative Demodulation of CPFSK in Asynchronous Slow FHSS Systems","authors":"Oluwatosin A. Adeladan, J. Shea","doi":"10.1109/MILCOM.2013.196","DOIUrl":"https://doi.org/10.1109/MILCOM.2013.196","url":null,"abstract":"In slow frequency-hop spread spectrum with nonorthogonal spreading sequences, multiple-access interference (MAI) occurs whenever two users transmit in the same frequency band. Schemes to mitigate such MAI have been previously developed for such systems when binary frequency-shift keying is used for modulation. It is desirable to instead use continuous-phase frequency-shift keying (CPFSK) to improve spectral efficiency, however, CPFSK is not a memoryless modulation and this complicates the problem of MAI mitigation. Previous work on CPFSK has been limited to ignoring the effects of MAI. In this paper, we develop an interference mitigation scheme for a slow FHSS system employing CPFSK and present performance results that show that our scheme significantly improves performance, especially in the presence of a strong interferers.","PeriodicalId":379382,"journal":{"name":"MILCOM 2013 - 2013 IEEE Military Communications Conference","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115411220","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}
Andrea L. Brennen, C. Fossa, T. Macdonald, S. Arbiv, William C. Barto
{"title":"Worth a Thousand Bits: Visual Encoding of Tactical Communication Network Data","authors":"Andrea L. Brennen, C. Fossa, T. Macdonald, S. Arbiv, William C. Barto","doi":"10.1109/MILCOM.2013.227","DOIUrl":"https://doi.org/10.1109/MILCOM.2013.227","url":null,"abstract":"Tactical communication networks are difficult to understand. Their performance is governed by complex interactions between many parameters and these interactions are not yet well understood. Researchers working in this area lack a consistent lexicon for experiment terminology and often disagree as to which characteristics of a tactical network are necessary to sufficiently describe network performance. MIT Lincoln Laboratory is pursuing a new research effort to investigate how better visualizations of network data -- leveraging new software built upon visual design principles -- can help improve the understanding of and research into these emerging networks. This research has informed the development of NetSight, a prototype visualization framework that allows researchers to display and interact with data pertaining to multiple layers of the protocol stack simultaneously, though a variety of \"views.\" The intent of the prototype is to create a framework to \"test\" a variety of visualizations and evaluate their effectiveness in the analysis of complex multi-dimensional network datasets. If successful, these visualizations will improve researchers' ability to understand and predict the performance of tactical networks, potentially leading to improvements in the design of future network protocols and architectures.","PeriodicalId":379382,"journal":{"name":"MILCOM 2013 - 2013 IEEE Military Communications Conference","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115475275","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}
{"title":"SNR Increase Per-Bit-Increase for MPSK and MQAM Signals and SNR Penalty of Using MPSK over MQAM for a Rayleigh Fading Channel","authors":"N. Kong, L. Milstein","doi":"10.1109/MILCOM.2013.137","DOIUrl":"https://doi.org/10.1109/MILCOM.2013.137","url":null,"abstract":"For an AWGN channel, the required SNR-increase-per-bit-increase (SNR_inc/bit_inc), in bits per symbol, to maintain the same symbol error rate (SER) for one or two dimension modulation schemes, such as MPSK and MQAM, is known. In this paper, we present similar results for a Rayleigh fading channel. It is found that the required SNR_inc/bit_inc in a fading channel consists of two parts-one is the same as that for an AWGN channel, and the other one is the extra SNR increase due to the fading. The latter is large (over 2dB) for a small constellation size (M) and negligible with a large M. It also decreases as the diversity order (DO) increases. In addition, we present simple closed-form expressions for the SNR penalty of using MPSK over QAM signals for Rayleigh fading. It is found that the extra penalty due to fading increases and approaches a constant as M increases. It decreases as the DO increases. Simulation results match the theoretical analysis.","PeriodicalId":379382,"journal":{"name":"MILCOM 2013 - 2013 IEEE Military Communications Conference","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123720745","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}
{"title":"Ideas for Future Mission Networks (Invited Paper)","authors":"T. Maseng","doi":"10.1109/MILCOM.2013.193","DOIUrl":"https://doi.org/10.1109/MILCOM.2013.193","url":null,"abstract":"The content of Future Mission Networks (FMN) is in the process of being defined. In this article some ideas are presented which may improve its usefulness compared to the Afghanistan Mission Networks, like how more frequency bands can be used more efficiently by a distributed peer to peer (P2P) network. A P2P network is be believed to be more scalable and more robust to failures compared to a centralized system using a common database. Several hot military research topics are discussed.","PeriodicalId":379382,"journal":{"name":"MILCOM 2013 - 2013 IEEE Military Communications Conference","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122644683","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}
Xiang Li, Chansu Yu, M. Hizlan, Wontae Kim, Seungmin Park
{"title":"Physical Layer Watermarking of Direct Sequence Spread Spectrum Signals","authors":"Xiang Li, Chansu Yu, M. Hizlan, Wontae Kim, Seungmin Park","doi":"10.1109/MILCOM.2013.88","DOIUrl":"https://doi.org/10.1109/MILCOM.2013.88","url":null,"abstract":"Physical layer security mechanisms have drawn increasing research interest recently along with the development of software defined radio (SDR) techniques. This paper proposes a physical layer watermarking technique named Watermarked Direct Sequence Spread Spectrum (DSSS) or WDSSS technique, which embeds authentication information into pseudonoise (PN) sequences of a DSSS system. The design and implementation of the WDSSS prototype system on the GNU Radio/USRP SDR platform are discussed, as well as two embedding methods, the maximized minimum distance method and the sub-sequence method. Theoretical analysis and experimental results on the WDSSS prototype system are presented to evaluate the performances of both the content signal and the watermark signal. Results show that, for the 11-chip PN sequence, the impact of artificial chip alteration to the content signal is quantitatively predictable, with 2 dB extra signal-to-noise ratio (SNR) required to maintain an acceptable packet error rate for one additional flipped chip. The properties of embedding methods are also analyzed and compared.","PeriodicalId":379382,"journal":{"name":"MILCOM 2013 - 2013 IEEE Military Communications Conference","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125728567","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}