Interference can be a significant problem in loosely organized networks such as ad-hoc radio networks. One technique for dealing with interference is to attempt joint detection of all signals arriving at a node. Iterative algorithms based on the turbo-principle yield significant performance improvements when applied to this problem. This paper concentrates on performance analysis of iterative i...

We report an investigation into the interference rejection capabilities of a dual antenna system on a mobile telephone prototype for the 1800 MHz band. The investigation is done by means of narrowband downlink channel measurements in a microcellular-like environment. Complex signal samples are used in order to investigate the interference rejection gain with di erent diversity combining schemes...

# This work has been supported by Nokia. Abstract Multicode CDMA with V-BLAST architecture is an attractive scheme to achieve high data rate transmission. We propose an advanced detection scheme, order partial parallel interference cancellation with decision feedback (DF-OPPIC), to combat co-antenna interference and multiple access interference in the system. Compared with the original referenc...

A space-time processing scheme is proposed for TDMA based cellular/PCS communications that cancels co-channel interference while simultaneously equalizing the desired signal. This is achieved through processing of a training signal designed from a PN code. At the receiver, the symbol waveform is built up above the noise and interference through correlation with a sampled waveform designed to ex...

We present an analysis of a femtocellular communications network and the impact of cochannel interference on link performance. Furthermore, we propose a method whereby user terminals can maintain a controlonly connection to an adjacent femtocell for interference mitigation purposes. Specifically, we provide an emphasis on suboptimal but practical methods that rely on transmit beamforming. Our n...

The use of multi-hop relaying in cellular networks is considered a key technique for increasing data transmission rates and maximizing coverage in fourth generation (4G) wireless systems. With relaying, data destined for a mobile terminal will be relayed to a wireless relay station nearest the terminal rather than being transmitted from a more distant base station. Selection of the best relay r...

Orthogonal frequency-division multiplexing (OFDM) communication-radar networks are systems where individual nodes use OFDM signals to both communicate and perform radar simultaneously. As a research subject, such networks are fairly new and lack some research covering fundamental limits. In particular, it is unclear how the reliability of the radar component is affected by a network operation, ...