A Capacity Improvement Method for CDMA based Mesh Networks in SUI Multipath Fading Channels

TL;DR

This paper proposes a power management and MMSE-based multiuser detection scheme to double the capacity of CDMA mesh networks in multipath fading environments, addressing capacity limitations.

Contribution

It introduces a novel method combining power control and MMSE detection to significantly enhance CDMA mesh network capacity in challenging fading conditions.

Findings

Capacity doubled compared to conventional methods

Effective in multipath fading environments

Simulation confirms improved performance

Abstract

Code Division Multiple Access (CDMA) is the most promising candidate for wideband data access. This is due to the advantage of soft limit on the number of active mobile devices. Many wireless mesh systems impose an upper bound on the BER performance which restricts the increase in number of mobile users. Capacity is further reduced in Multipath Fading Environment (MFE). This paper presents an effective method of improving the capacity of a CDMA based mesh network by managing the transmitted powers of the mobile devices and using MMSE based Multiuser Detection (MUD). The proposed scheme improves the capacity two times as compared to the conventional CDMA based mesh network. Simulation results have been presented to demonstrate the effectiveness of the proposed scheme.