elements 10 a c connected to a corresponding remote radio unit 15 a c the plurality of antenna elements 10 a c is distributed for example throughout a building or over a campus or metropolitan area but this is not limiting of the invention the transmission signals at the antenna elements 10 a c are received from the remote radio units 15 a c and converted from digital domain to analog domain by digital to analog converters 17 a c the antenna elements 10 a c include an amplifier to amplify the transmission signals the remote radio units 15 a c are connected via a distribution network 47 and through a front end unit 22 and a power reduction device 20 to a base station 30 the base station 30 is connected to at least one fixed line network 60 operated by a network operator it will be appreciated that there may be more than one base station 30 connected to the remote radio units 15 a c and that the base station 30 can be connected to more than one fixed line network 60 the term u201c base station u201d 30 is used in this disclosure to encompass not only base transceiver stations as known in the gsm protocol but also a node b known in the umts protocol an enode b in the lte protocol as well as similar units in other wireless protocols the base station 30 passes transmission signals 25 to the power reduction device 20 fig1 b shows a further aspect.