綜合業(yè)務(wù)的CDMA系統(tǒng)在不同無(wú)線環(huán)境下的容量分析
CAPACITY OF CDMA FOR INTEGRATED TRAFFIC IN DIFFERENT WIRELESS ENVIRONMENT
-
摘要: 個(gè)人通信和移動(dòng)計(jì)算的發(fā)展促進(jìn)了將綜合業(yè)務(wù)引入移動(dòng)通信中.CDMA系統(tǒng)是適合于傳輸綜合業(yè)務(wù)的系統(tǒng).本文首先給出了一種業(yè)務(wù)接入控制算法,并在此算法下,對(duì)綜合業(yè)務(wù)的CDMA系統(tǒng)的容量做一簡(jiǎn)要分析,為滿足不同業(yè)務(wù)的QoS(Quality of Service)要求,對(duì)于不同的業(yè)務(wù)在傳輸時(shí)給予不同的功率.為克服速率較高的業(yè)務(wù)需要較大功率的問題,對(duì)速率較高的業(yè)務(wù)給予較寬的傳輸帶寬.不同的業(yè)務(wù)在同一頻段中傳輸.最后,依據(jù)CODIT(COde DIvision Testbed)提供的測(cè)試數(shù)據(jù),給出了不同業(yè)務(wù)在不同無(wú)線環(huán)境下的容量.
-
關(guān)鍵詞:
- 碼分多址接入; 綜合業(yè)務(wù); 移動(dòng)通信
Abstract: The developments of Personal Communication and Mobile Computing stimulate the introducation of integrated traffics into mobile communication. CDMA is suitable for transmission of integrated traffics. In this paper, we introduced an admission control algorithm. Under this algorithm, the capacity of a CDMA system for integrated traffics is evaluted. Users with different QoS requirements are allocated different power. To solve the problem of higher-rate traffics using higher powers, wider bandwidth to higher-rate traffics is given. All the traffics are transmitted in the same frequency band. Finally, according to the measured data of CODIT, we derived the capacity of different traffics in different environments. -
Baier A. Design study for a CDMA-based third-generation mobile radio system. IEEE J. of SAC, 1994, SAC-12(4): 733-744.[2]Chih-Lin I. Variable spreading gain CDMA with adaptive control for integrated traffic in wireless networks. Proc. VTC95, Chicago: July, 1995, 907-911.[3]Marta Pizarroso, et al. Common basic for evaluation of ATDMA and CODIT system concept. MPLA/TDE/SIGS/DS/P/001/bl Sep.1995.[4]Marta Pizarroso, et al. Prelimiary evaluation of ATDMA and CODIT system concept.[5]MPLA/TDE/SIG5/DS/P/002/bl Sep.1995. -
計(jì)量
- 文章訪問數(shù): 1821
- HTML全文瀏覽量: 115
- PDF下載量: 357
- 被引次數(shù): 0
下載:
