{"data":{"id":"10.6084/m9.figshare.4868384","type":"dois","attributes":{"doi":"10.6084/m9.figshare.4868384","prefix":"10.6084","suffix":"m9.figshare.4868384","identifiers":[],"alternateIdentifiers":[],"creators":[{"name":"Suhanya Jayaprakasam","affiliation":[],"nameIdentifiers":[]}],"titles":[{"title":"Sidelobe Reduction and Capacity Improvement of Open-Loop Collaborative Beamforming in Wireless Sensor Networks"}],"publisher":"figshare","container":{},"publicationYear":2017,"subjects":[{"subject":"100510 Wireless Communications","subjectScheme":"FOR"},{"subject":"FOS: Electrical engineering, electronic engineering, information engineering","schemeUri":"http://www.oecd.org/science/inno/38235147.pdf","subjectScheme":"Fields of Science and Technology (FOS)"},{"subject":"FOS: Electrical engineering, electronic engineering, information engineering","subjectScheme":"Fields of Science and Technology (FOS)"}],"contributors":[],"dates":[{"date":"2017-04-12","dateType":"Created"},{"date":"2017-04-12","dateType":"Updated"},{"date":"2017","dateType":"Issued"}],"language":null,"types":{"ris":"DATA","bibtex":"misc","citeproc":"dataset","schemaOrg":"Dataset","resourceType":"Dataset","resourceTypeGeneral":"Dataset"},"relatedIdentifiers":[],"relatedItems":[],"sizes":["26719995 Bytes"],"formats":[],"version":null,"rightsList":[{"rights":"Creative Commons Attribution 4.0 International","rightsUri":"https://creativecommons.org/licenses/by/4.0/legalcode","schemeUri":"https://spdx.org/licenses/","rightsIdentifier":"cc-by-4.0","rightsIdentifierScheme":"SPDX"}],"descriptions":[{"description":"\u003cpre\u003eCollaborative beamforming (CBF) with a finite number of collaborating nodes (CNs) produces sidelobes that are highly dependent on the collaborating nodes' locations.\u003c/pre\u003e\u003cpre\u003eThe sidelobes cause interference and affect the communication rate of unintended receivers located within the transmission range.\u003c/pre\u003e\u003cpre\u003eNulling is not possible in an open-loop CBF since the collaborating nodes are unable to receive feedback from the receivers.\u003c/pre\u003e\u003cpre\u003eHence, the overall sidelobe reduction is required to avoid interference in the directions of the unintended receivers.\u003c/pre\u003e\u003cpre\u003eHowever, the impact of sidelobe reduction on the capacity improvement at the unintended receiver has never been reported in previous works.\u003c/pre\u003e\u003cpre\u003eIn this paper, the effect of peak sidelobe (PSL) reduction in CBF on the capacity of an unintended receiver is analyzed.\u003c/pre\u003e\u003cpre\u003eThree meta-heuristic optimization methods are applied to perform PSL minimization, namely genetic algorithm (GA), particle swarm algorithm (PSO) and a simplified version of the PSO called the weightless swarm algorithm (WSA).\u003c/pre\u003e\u003cpre\u003eAn average reduction of $20 \\: \\text{dB}$ in PSL alongside $162\\%$ capacity improvement is achieved in the worst case scenario with the WSA optimization.\u003c/pre\u003e\u003cpre\u003eIt is discovered that the PSL minimization in the CBF provides capacity improvement at an unintended receiver only if the CBF cluster is small and dense.\u003c/pre\u003e","descriptionType":"Abstract"}],"geoLocations":[],"fundingReferences":[],"xml":"PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTgiPz4KPHJlc291cmNlIHhtbG5zPSJodHRwOi8vZGF0YWNpdGUub3JnL3NjaGVtYS9rZXJuZWwtNCIgeG1sbnM6eHNpPSJodHRwOi8vd3d3LnczLm9yZy8yMDAxL1hNTFNjaGVtYS1pbnN0YW5jZSIgeHNpOnNjaGVtYUxvY2F0aW9uPSJodHRwOi8vZGF0YWNpdGUub3JnL3NjaGVtYS9rZXJuZWwtNCBodHRwOi8vc2NoZW1hLmRhdGFjaXRlLm9yZy9tZXRhL2tlcm5lbC00LjEvbWV0YWRhdGEueHNkIj4KICA8aWRlbnRpZmllciBpZGVudGlmaWVyVHlwZT0iRE9JIj4xMC42MDg0L005LkZJR1NIQVJFLjQ4NjgzODQ8L2lkZW50aWZpZXI+CiAgPGNyZWF0b3JzPgogICAgPGNyZWF0b3I+CiAgICAgIDxjcmVhdG9yTmFtZT5TdWhhbnlhIEpheWFwcmFrYXNhbTwvY3JlYXRvck5hbWU+CiAgICA8L2NyZWF0b3I+CiAgPC9jcmVhdG9ycz4KICA8dGl0bGVzPgogICAgPHRpdGxlPlNpZGVsb2JlIFJlZHVjdGlvbiBhbmQgQ2FwYWNpdHkgSW1wcm92ZW1lbnQgb2YgT3Blbi1Mb29wIENvbGxhYm9yYXRpdmUgQmVhbWZvcm1pbmcgaW4gV2lyZWxlc3MgU2Vuc29yIE5ldHdvcmtzPC90aXRsZT4KICA8L3RpdGxlcz4KICA8ZGVzY3JpcHRpb25zPgogICAgPGRlc2NyaXB0aW9uIGRlc2NyaXB0aW9uVHlwZT0iQWJzdHJhY3QiPiZsdDtwcmUmZ3Q7Q29sbGFib3JhdGl2ZSBiZWFtZm9ybWluZyAoQ0JGKSB3aXRoIGEgZmluaXRlIG51bWJlciBvZiBjb2xsYWJvcmF0aW5nIG5vZGVzIChDTnMpIHByb2R1Y2VzIHNpZGVsb2JlcyB0aGF0IGFyZSBoaWdobHkgZGVwZW5kZW50IG9uIHRoZSBjb2xsYWJvcmF0aW5nIG5vZGVzJyBsb2NhdGlvbnMuJmx0Oy9wcmUmZ3Q7Jmx0O3ByZSZndDtUaGUgc2lkZWxvYmVzIGNhdXNlIGludGVyZmVyZW5jZSBhbmQgYWZmZWN0IHRoZSBjb21tdW5pY2F0aW9uIHJhdGUgb2YgdW5pbnRlbmRlZCByZWNlaXZlcnMgbG9jYXRlZCB3aXRoaW4gdGhlIHRyYW5zbWlzc2lvbiByYW5nZS4mbHQ7L3ByZSZndDsmbHQ7cHJlJmd0O051bGxpbmcgaXMgbm90IHBvc3NpYmxlIGluIGFuIG9wZW4tbG9vcCBDQkYgc2luY2UgdGhlIGNvbGxhYm9yYXRpbmcgbm9kZXMgYXJlIHVuYWJsZSB0byByZWNlaXZlIGZlZWRiYWNrIGZyb20gdGhlIHJlY2VpdmVycy4mbHQ7L3ByZSZndDsmbHQ7cHJlJmd0O0hlbmNlLCB0aGUgb3ZlcmFsbCBzaWRlbG9iZSByZWR1Y3Rpb24gaXMgcmVxdWlyZWQgdG8gYXZvaWQgaW50ZXJmZXJlbmNlIGluIHRoZSBkaXJlY3Rpb25zIG9mIHRoZSB1bmludGVuZGVkIHJlY2VpdmVycy4mbHQ7L3ByZSZndDsmbHQ7cHJlJmd0O0hvd2V2ZXIsIHRoZSBpbXBhY3Qgb2Ygc2lkZWxvYmUgcmVkdWN0aW9uIG9uIHRoZSBjYXBhY2l0eSBpbXByb3ZlbWVudCBhdCB0aGUgdW5pbnRlbmRlZCByZWNlaXZlciBoYXMgbmV2ZXIgYmVlbiByZXBvcnRlZCBpbiBwcmV2aW91cyB3b3Jrcy4mbHQ7L3ByZSZndDsmbHQ7cHJlJmd0O0luIHRoaXMgcGFwZXIsIHRoZSBlZmZlY3Qgb2YgcGVhayBzaWRlbG9iZSAoUFNMKSByZWR1Y3Rpb24gaW4gQ0JGIG9uIHRoZSBjYXBhY2l0eSBvZiBhbiB1bmludGVuZGVkIHJlY2VpdmVyIGlzIGFuYWx5emVkLiZsdDsvcHJlJmd0OyZsdDtwcmUmZ3Q7VGhyZWUgbWV0YS1oZXVyaXN0aWMgb3B0aW1pemF0aW9uIG1ldGhvZHMgYXJlIGFwcGxpZWQgdG8gcGVyZm9ybSBQU0wgbWluaW1pemF0aW9uLCBuYW1lbHkgZ2VuZXRpYyBhbGdvcml0aG0gKEdBKSwgcGFydGljbGUgc3dhcm0gYWxnb3JpdGhtIChQU08pIGFuZCBhIHNpbXBsaWZpZWQgdmVyc2lvbiBvZiB0aGUgUFNPIGNhbGxlZCB0aGUgd2VpZ2h0bGVzcyBzd2FybSBhbGdvcml0aG0gKFdTQSkuJmx0Oy9wcmUmZ3Q7Jmx0O3ByZSZndDtBbiBhdmVyYWdlIHJlZHVjdGlvbiBvZiAkMjAgXDogXHRleHR7ZEJ9JCBpbiBQU0wgYWxvbmdzaWRlICQxNjJcJSQgY2FwYWNpdHkgaW1wcm92ZW1lbnQgaXMgYWNoaWV2ZWQgaW4gdGhlIHdvcnN0IGNhc2Ugc2NlbmFyaW8gd2l0aCB0aGUgV1NBIG9wdGltaXphdGlvbi4mbHQ7L3ByZSZndDsmbHQ7cHJlJmd0O0l0IGlzIGRpc2NvdmVyZWQgdGhhdCB0aGUgUFNMIG1pbmltaXphdGlvbiBpbiB0aGUgQ0JGIHByb3ZpZGVzIGNhcGFjaXR5IGltcHJvdmVtZW50IGF0IGFuIHVuaW50ZW5kZWQgcmVjZWl2ZXIgb25seSBpZiB0aGUgQ0JGIGNsdXN0ZXIgaXMgc21hbGwgYW5kIGRlbnNlLiZsdDsvcHJlJmd0OzwvZGVzY3JpcHRpb24+CiAgPC9kZXNjcmlwdGlvbnM+CiAgPHN1YmplY3RzPgogICAgPHN1YmplY3Qgc2NoZW1lVVJJPSJodHRwOi8vd3d3LmFicy5nb3YuYXUvYXVzc3RhdHMvYWJzQC5uc2YvMC82QkI0MjdBQjk2OTZDMjI1Q0EyNTc0MTgwMDA0NDYzRSIgc3ViamVjdFNjaGVtZT0iRk9SIj4xMDA1MTAgV2lyZWxlc3MgQ29tbXVuaWNhdGlvbnM8L3N1YmplY3Q+CiAgPC9zdWJqZWN0cz4KICA8cHVibGlzaGVyPmZpZ3NoYXJlPC9wdWJsaXNoZXI+CiAgPHB1YmxpY2F0aW9uWWVhcj4yMDE3PC9wdWJsaWNhdGlvblllYXI+CiAgPGRhdGVzPgogICAgPGRhdGUgZGF0ZVR5cGU9IkNyZWF0ZWQiPjIwMTctMDQtMTI8L2RhdGU+CiAgICA8ZGF0ZSBkYXRlVHlwZT0iVXBkYXRlZCI+MjAxNy0wNC0xMjwvZGF0ZT4KICA8L2RhdGVzPgogIDxyZXNvdXJjZVR5cGUgcmVzb3VyY2VUeXBlR2VuZXJhbD0iRGF0YXNldCI+RGF0YXNldDwvcmVzb3VyY2VUeXBlPgogIDxzaXplcz4KICAgIDxzaXplPjI2NzE5OTk1IEJ5dGVzPC9zaXplPgogIDwvc2l6ZXM+CiAgPHJpZ2h0c0xpc3Q+CiAgICA8cmlnaHRzIHJpZ2h0c1VSST0iaHR0cHM6Ly9jcmVhdGl2ZWNvbW1vbnMub3JnL2xpY2Vuc2VzL2J5LzQuMC8iPkNDIEJZIDQuMDwvcmlnaHRzPgogIDwvcmlnaHRzTGlzdD4KPC9yZXNvdXJjZT4=","url":"https://figshare.com/articles/dataset/Sidelobe_Reduction_and_Capacity_Improvement_of_Open-Loop_Collaborative_Beamforming_in_Wireless_Sensor_Networks/4868384","contentUrl":null,"metadataVersion":2,"schemaVersion":"http://datacite.org/schema/kernel-4","source":"mds","isActive":true,"state":"findable","reason":null,"viewCount":0,"viewsOverTime":[],"downloadCount":0,"downloadsOverTime":[],"referenceCount":0,"citationCount":0,"citationsOverTime":[],"partCount":0,"partOfCount":0,"versionCount":0,"versionOfCount":0,"created":"2017-04-12T11:38:06.000Z","registered":"2017-04-12T11:38:06.000Z","published":"2017","updated":"2020-09-02T12:55:21.000Z"},"relationships":{"client":{"data":{"id":"figshare.ars","type":"clients"}},"provider":{"data":{"id":"otjm","type":"providers"}},"media":{"data":{"id":"10.6084/m9.figshare.4868384","type":"media"}},"references":{"data":[]},"citations":{"data":[]},"parts":{"data":[]},"partOf":{"data":[]},"versions":{"data":[]},"versionOf":{"data":[]}}}}