2012-05-14

Technology Rejects LTE OFDM Interference

Most LTE networks operate in a single frequency network configuration, unlike conventional cellular or 3G networks that use different groups of frequencies to avoid interference between adjacent cell sites. Because the different LTE base stations are transmitting different data to different users, they can interfere with each other. The interference can be rejected using nonlinear techniques that estimate the interference and subtract it from the received signal. It can also be rejected by using multiple antennas and combining them to create a directional antenna. 
LTE is one of the technologies that has been proposed for the next generation of digital broadcasting. A technology such as Sequans AIR could permit greater spectrum efficiency, greater coverage and a reduction in interference between a high power main transmitter and lower power boosters or repeaters.

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