SPC05-5: A Base Vector Algorithm for Location Determination Based on SSSD Measurements in Wireless Cellular Communications

In this paper, a basis vector algorithm for location determination based on stationary signal-strength-difference (SSSD) measurements in wireless cellular communications is proposed. We make use of a set of independent base transceiver stations (BTSs) as the basis 1-vectors of a distance vector space. Multiplying basis 1-vectors together with the exterior product leads to a new basis 2-vector in distance difference vector space. Under this new vector space framework, the distance difference derived from SSSD measurements can be corrected in least- square (LS) sense. After that, the location determination is performed with exterior product operation based on a set of hyperbolic curves defined by the corrected distance difference. Gathering the measurements in a commercial wireless cellular 1.8 GHz network, the results demonstrate that the proposed algorithm offer the location determination with good accuracy in most cases.