IEEE Military Communications Conference, 2003. MILCOM 2003.最新文献_第8页

Antijamming performance of slow FH-CPM signals with concatenated coding and jamming estimation 慢速FH-CPM信号串接编码和干扰估计的抗干扰性能

IEEE Military Communications Conference, 2003. MILCOM 2003. Pub Date : 2003-10-13 DOI: 10.1109/MILCOM.2003.1290338

H. Kim, Q. Zhao, G. Stuber, K. Narayanan

引用次数: 7

Performance of chip-level differential detection for DS-CDMA in multipath fading channels 多径衰落信道下DS-CDMA芯片级差分检测性能研究

IEEE Military Communications Conference, 2003. MILCOM 2003. Pub Date : 2003-10-13 DOI: 10.1109/MILCOM.2003.1290321

M. Howlader, H. Chang

引用次数: 7

Multiuser CDMA with a chip-level interference cancellation technique 具有片级干扰消除技术的多用户CDMA

IEEE Military Communications Conference, 2003. MILCOM 2003. Pub Date : 2003-10-13 DOI: 10.1109/MILCOM.2003.1290129

J. Dunyak, Charles Suprin

{"title":"Multiuser CDMA with a chip-level interference cancellation technique","authors":"J. Dunyak, Charles Suprin","doi":"10.1109/MILCOM.2003.1290129","DOIUrl":"https://doi.org/10.1109/MILCOM.2003.1290129","url":null,"abstract":"Multiple-access interference (MAI) limits the performance of CDMA systems using the conventional receiver, but the optimal receiver is too complex for practical implementation. This paper demonstrates a numerically efficient technique for reducing MAI in CDMA systems. The technique, a nonlinear approach inspired by the Kalman filter, uses decoupled filters to estimate symbols for each user while accomplishing interference cancellation in the innovation term. The filter technique developed here provides a computationally practical approach to multiuser detection for asynchronous long code systems, which significantly outperforms the conventional receiver. Kalman filter approaches to multiuser detection have been applied before (Lim and Ma 2000, Lim et. al. 1998) to binary phase shift keying through implementation of a standard Kalman filter approach. Unfortunately, this leads to high computational complexity. Here, we instead consider a formulation in which the spreading codes are viewed as random and their properties are used to decouple the Kalman filter for each user. Interference cancellation is then implemented through the innovations. A binary minimum mean squared error estimate is made, which results in a nonlinear estimator. The new nonlinear technique is shown to significantly outperform an optimized partial parallel interference cancellation approach, which is the current state of the art technique for asynchronous long code systems. System capacity is then significantly increased.","PeriodicalId":435910,"journal":{"name":"IEEE Military Communications Conference, 2003. MILCOM 2003.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130399638","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: 2

Ad hoc mobility protocol suite for the MOSAIC ATD MOSAIC ATD的自组织移动协议套件

IEEE Military Communications Conference, 2003. MILCOM 2003. Pub Date : 2003-10-13 DOI: 10.1109/MILCOM.2003.1290422

K. Young, S. Samtani, S. Khurana, P. Gurung, L. Wong, J. Lee, W. Stephens, C. Graff, M. Bereschinsky

引用次数: 11

Fault localization and self-healing with dynamic domain configuration 基于动态域配置的故障定位与自修复

IEEE Military Communications Conference, 2003. MILCOM 2003. Pub Date : 2003-10-13 DOI: 10.1109/MILCOM.2003.1290294

L. Kant, A. McAuley, R. Morera, A. Sethi, M. Steinder

引用次数: 6

Enabling the objective force: concepts, technologies, and challenges 实现客观力量:概念、技术和挑战

IEEE Military Communications Conference, 2003. MILCOM 2003. Pub Date : 2003-10-13 DOI: 10.1109/MILCOM.2003.1290103

J. Burbank

引用次数: 2

Multitier mobile ad hoc networks: architecture, protocols, and perfomance 多层移动自组织网络:体系结构、协议和性能

IEEE Military Communications Conference, 2003. MILCOM 2003. Pub Date : 2003-10-13 DOI: 10.1109/MILCOM.2003.1290411

B. Ryu, T. Andersen, T. Elbatt, Yongguang Zhang

{"title":"Multitier mobile ad hoc networks: architecture, protocols, and perfomance","authors":"B. Ryu, T. Andersen, T. Elbatt, Yongguang Zhang","doi":"10.1109/MILCOM.2003.1290411","DOIUrl":"https://doi.org/10.1109/MILCOM.2003.1290411","url":null,"abstract":"While mobile ad-hoc networking (MANET) research has received a considerable attention in recent years, the majority of them have focused on single-tier (e.g., ground) and homogeneous (e.g., same radio for every node) MANET. Few have investigated the potential implications of multitier and heterogeneous natures of MANET on the design and performance of MANET protocols in a systematic manner. For example, one of the stark differences between single-tier and multitier MANET environments is that the multitier MANET naturally creates \"coverage asymmetry\" due to the much larger coverage area by airborne nodes compared to ground nodes. Consequently, the number of \"neighbors\" an airborne node sees can be potentially several orders of magnitude larger than that of a ground node. Treating this airborne node same as any ground node will adversely affect the performance of medium access control (MAC) and/or routing MANET protocols. In this paper, we present a detailed multitier MANET architecture, associated issues, and protocols developed. Our novel protocols and simulation tools designed for multitier MANET are described with preliminary performance results.","PeriodicalId":435910,"journal":{"name":"IEEE Military Communications Conference, 2003. MILCOM 2003.","volume":"182 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132741661","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: 6

A study of TCP performance for mobile SATCOM system over blocking conditions 阻塞条件下移动卫星通信系统TCP性能研究

IEEE Military Communications Conference, 2003. MILCOM 2003. Pub Date : 2003-10-13 DOI: 10.1109/MILCOM.2003.1290437

G.A. Briceno, D.J. Shyy, J. Wu

引用次数: 3

Synchronization for RF carrier frequency hopped OFDM: analysis and simulation 射频载波跳频OFDM的同步:分析与仿真

IEEE Military Communications Conference, 2003. MILCOM 2003. Pub Date : 2003-10-13 DOI: 10.1109/MILCOM.2003.1290382

J. Kleider, S. Gifford, G. Maalouli, S. Chuprun, Brian M. Sadler

引用次数: 16

Satellite communications networks with IP quality of services 具有IP服务质量的卫星通信网络

IEEE Military Communications Conference, 2003. MILCOM 2003. Pub Date : 2003-10-13 DOI: 10.1109/MILCOM.2003.1290113

K. Y. Jo, Tony Modelfino

{"title":"Satellite communications networks with IP quality of services","authors":"K. Y. Jo, Tony Modelfino","doi":"10.1109/MILCOM.2003.1290113","DOIUrl":"https://doi.org/10.1109/MILCOM.2003.1290113","url":null,"abstract":"This paper presents a satellite communications (SATCOM) architecture that uses packet switched technologies and addresses the relationships between SATCOM and IP quality of service (QoS). The onboard satellite processing with fast-packet switching rather than traditional circuit switch or bent pipe SATCOM connections, is described first. The performance of such an architecture may improve or degrade with IP QoS services depending on how they interact. The network architecture incorporates a bandwidth-on-demand concept through demand-assigned multiple-access (DAMA) protocols, and achieves multiple levels of QoS services through IP class-of-service (CoS). This concept improves application performance, increases network utilization and throughput, and reduces message/file transfer times. The bit error rates that are inherent to SATCOM networks do not apply directly to the architecture. Underlying performance evaluation methodologies as well as related implementation issues for the proposed architecture are addressed. The onboard switching architecture generally brings about performance improvements, but one case that degrades performance is presented. In this example, excessive delays occur when transmitting moderate-to-high bit error rates due to an IP error recovery procedure that induces more lower-layer packet segmentation and reassembly processes. Thus, the higher bit error rate caused by satellite links can be critical for the performance. This observation along with related protocol and performance issues leads to the conclusion that the essential IP features will only be operative for the fast-packet switching SATCOM architecture.","PeriodicalId":435910,"journal":{"name":"IEEE Military Communications Conference, 2003. MILCOM 2003.","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132048965","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: 2