Soft handoff and uplink capacity in a two-tier CDMA system
This paper examines the effect of soft handoff on the uplink user capacity of a code division multiple access system consisting of a single macrocell in which a single hotspot microcell is embedded. The users of these two base stations operate over the same frequency band. In the soft-handoff scenar...
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| Veröffentlicht in: | IEEE transactions on wireless communications 2005-07, Vol.4 (4), p.1297-1301 |
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| container_title | IEEE transactions on wireless communications |
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| creator | Kishore, S. Greenstein, L.J. Poor, H.V. Schwartz, S.C. |
| description | This paper examines the effect of soft handoff on the uplink user capacity of a code division multiple access system consisting of a single macrocell in which a single hotspot microcell is embedded. The users of these two base stations operate over the same frequency band. In the soft-handoff scenario studied here, both macrocell and microcell base stations serve each system user, and the two received copies of a desired user's signal are summed using maximal ratio combining. Exact and approximate analytical methods are developed to compute uplink user capacity. Simulation results demonstrate a 20% increase in user capacity compared to hard handoff. In addition, simple approximate methods are presented for estimating soft-handoff capacity and are shown to be quite accurate. |
| doi_str_mv | 10.1109/TWC.2005.850319 |
| format | Article |
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The users of these two base stations operate over the same frequency band. In the soft-handoff scenario studied here, both macrocell and microcell base stations serve each system user, and the two received copies of a desired user's signal are summed using maximal ratio combining. Exact and approximate analytical methods are developed to compute uplink user capacity. Simulation results demonstrate a 20% increase in user capacity compared to hard handoff. 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The users of these two base stations operate over the same frequency band. In the soft-handoff scenario studied here, both macrocell and microcell base stations serve each system user, and the two received copies of a desired user's signal are summed using maximal ratio combining. Exact and approximate analytical methods are developed to compute uplink user capacity. Simulation results demonstrate a 20% increase in user capacity compared to hard handoff. In addition, simple approximate methods are presented for estimating soft-handoff capacity and are shown to be quite accurate.</description><subject>Analytical models</subject><subject>Applied sciences</subject><subject>Approximation</subject><subject>Base stations</subject><subject>Code division multiple access</subject><subject>Code division multiple access (CDMA)</subject><subject>Computational modeling</subject><subject>Computer simulation</subject><subject>Diversity reception</subject><subject>Equipments and installations</subject><subject>Exact sciences and technology</subject><subject>Frequency</subject><subject>Frequency bands</subject><subject>Laboratories</subject><subject>macrocell</subject><subject>Macrocell networks</subject><subject>Mathematical analysis</subject><subject>microcell</subject><subject>Microcell networks</subject><subject>Mobile radiocommunication systems</subject><subject>Multiaccess communication</subject><subject>Radiocommunications</subject><subject>Reproduction</subject><subject>Shape</subject><subject>soft handoff</subject><subject>Stations</subject><subject>Systems, networks and services of telecommunications</subject><subject>Telecommunications</subject><subject>Telecommunications and information theory</subject><subject>Transmission and modulation (techniques and equipments)</subject><subject>user capacity</subject><subject>Wireless communication</subject><issn>1536-1276</issn><issn>1558-2248</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNp90E1Lw0AQBuAgCtbq2YOXRVBPaXd2sx_xVuInVDxY8bhsNruYmiYxmyD9925poeDB0wzMMwPzRtE54AkATqeLj2xCMGYTyTCF9CAaAWMyJiSRh5ue8hiI4MfRifdLjEFwxkbR7VvjevSp66JxDoWChrYq6y9kdKtN2a9RWSON-p8m7kvboezuZYb82vd2dRodOV15e7ar4-j94X6RPcXz18fnbDaPTUJIHyeasIJbTIlLNAehc0ZJSilYmYDLjSVFkXOZ585RoRPDuUyloEw7bQrmMB1HN9u7bdd8D9b3alV6Y6tK17YZvEohCa8ITIK8_lcSCRiCDfDyD1w2Q1eHL5TkKcFpSiGg6RaZrvG-s061XbnS3VoBVpvIVYhcbSJX28jDxtXurPZGV67TtSn9fk0AYQJEcBdbV1pr92MGBEugv_1Zhzc</recordid><startdate>20050701</startdate><enddate>20050701</enddate><creator>Kishore, S.</creator><creator>Greenstein, L.J.</creator><creator>Poor, H.V.</creator><creator>Schwartz, S.C.</creator><general>IEEE</general><general>Institute of Electrical and Electronics Engineers</general><general>The Institute of Electrical and Electronics Engineers, Inc. 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| ispartof | IEEE transactions on wireless communications, 2005-07, Vol.4 (4), p.1297-1301 |
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| language | eng |
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| source | IEEE Electronic Library (IEL) |
| subjects | Analytical models Applied sciences Approximation Base stations Code division multiple access Code division multiple access (CDMA) Computational modeling Computer simulation Diversity reception Equipments and installations Exact sciences and technology Frequency Frequency bands Laboratories macrocell Macrocell networks Mathematical analysis microcell Microcell networks Mobile radiocommunication systems Multiaccess communication Radiocommunications Reproduction Shape soft handoff Stations Systems, networks and services of telecommunications Telecommunications Telecommunications and information theory Transmission and modulation (techniques and equipments) user capacity Wireless communication |
| title | Soft handoff and uplink capacity in a two-tier CDMA system |
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