An adaptive array for mobile communication systems

• The use of adaptive antenna techniques to increase the channel capacity is discussed. Directional sensitivity is obtained by using an antenna array at the base station, possibly both in receiving and transmitting modes. A scheme for separating several signals at the same frequency is proposed. The method is based on high-resolution direction-finding followed by optimal combination of the antenna outputs. Comparison with a method based on reference signals is made. Computer simulations are carried out to test the applicability of the technique to scattering scenarios that typically arise in urban areas. The proposed scheme is found to have great potential in rejecting cochannel interference, albeit at the expense of high computational requirements.

Ämnesord

TEKNIK OCH TEKNOLOGIER  -- Elektroteknik och elektronik -- Reglerteknik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Electrical Engineering, Electronic Engineering, Information Engineering -- Control Engineering (hsv//eng)

Nyckelord

Information Theory - Channel Capacity

Mathematical Techniques - Algorithms

Radio Interference - Suppression

Radio Systems

Mobile

Radio Telephone

Adaptive Arrays

Direction of Arrival Estimation

Directional Sensitivity

Mobile Communication Systems

Signal Waveform Estimation

Antennas

Directive

TECHNOLOGY

Automatic control

Publikations- och innehållstyp

ref (ämneskategori)

art (ämneskategori)