Enhancing the Capacity of Multi-Cell Frequency-hopped Multipel-Access Networks

摘要

In this paper we present a frequency hopping multipleaccess concept suitable for multi-cell network architectures. A set of orthogonal frequency hoppiig patterns is assigned to the users in each cell and cells are differentiated by concatenating the suer FH pattern use of guard times and possily GPS information enables synchronous operation for the range of hopping rates of interest. The capacities of this network for hte above FH/SS multiple access scheme with either coherent BPSK modulation or non-coherent BFSK modulatiion are evaluated for the AWGN channel. The effect of power ocntrol errors on the system performance is accounted for in each case. Similar resuts for asynreported for comparison purpose. It is argued that synchronous FH/SSMA is implementable and cn proivde higher capacity than asynchronous DS/CDMA under certain conditions.