{"title":"多速率业务中正交可变扩频因子码的不可重排紧凑分配","authors":"Yang Yang, T. Yum","doi":"10.1109/VTC.2001.956911","DOIUrl":null,"url":null,"abstract":"In UTRA systems, orthogonal variable-spreading-factor (OVSF) codes are used to support different transmission rates for different users. In this paper, we first define an index for measuring the flexibility of an assignable code set. Based on this flexibility index, a single-code assignment scheme, namely nonrearrangeable compact assignment (NCA), is proposed for accommodating multi-rate traffic. NCA can offer maximal flexibility to the resulting assignable code set after each code assignment. As a result, it gives better blocking, throughput and fairness performance when compared to random assignment (RA) scheme.","PeriodicalId":129008,"journal":{"name":"IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211)","volume":"299 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2001-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"28","resultStr":"{\"title\":\"Nonrearrangeable compact assignment of orthogonal variable- spreading factor codes for multi-rate traffic\",\"authors\":\"Yang Yang, T. Yum\",\"doi\":\"10.1109/VTC.2001.956911\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"In UTRA systems, orthogonal variable-spreading-factor (OVSF) codes are used to support different transmission rates for different users. In this paper, we first define an index for measuring the flexibility of an assignable code set. Based on this flexibility index, a single-code assignment scheme, namely nonrearrangeable compact assignment (NCA), is proposed for accommodating multi-rate traffic. NCA can offer maximal flexibility to the resulting assignable code set after each code assignment. As a result, it gives better blocking, throughput and fairness performance when compared to random assignment (RA) scheme.\",\"PeriodicalId\":129008,\"journal\":{\"name\":\"IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211)\",\"volume\":\"299 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2001-10-07\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"28\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/VTC.2001.956911\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/VTC.2001.956911","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Nonrearrangeable compact assignment of orthogonal variable- spreading factor codes for multi-rate traffic
In UTRA systems, orthogonal variable-spreading-factor (OVSF) codes are used to support different transmission rates for different users. In this paper, we first define an index for measuring the flexibility of an assignable code set. Based on this flexibility index, a single-code assignment scheme, namely nonrearrangeable compact assignment (NCA), is proposed for accommodating multi-rate traffic. NCA can offer maximal flexibility to the resulting assignable code set after each code assignment. As a result, it gives better blocking, throughput and fairness performance when compared to random assignment (RA) scheme.
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