Soft Handoff and Uplink Capacity in a Two-Tier CDMA System
Abstract
This paper examines the effect of soft handoff on the uplink user capacity of a CDMA 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.
Keywords
Cite
@article{arxiv.cs/0503041,
title = {Soft Handoff and Uplink Capacity in a Two-Tier CDMA System},
author = {Shalinee Kishore and Larry J. Greenstein and H. Vincent Poor and Stuart C. Schwartz},
journal= {arXiv preprint arXiv:cs/0503041},
year = {2016}
}
Comments
To appear in IEEE Transactions on Wireless Communications