Link performance evaluation for EGPRS with multiple antennas
نویسندگان
چکیده
Transmission diversity schemes have recently emerged in wireless systems as an attractive solution in order to mitigate fading effects. Space-time block codes (STBC) with two antennas can provide similar order diversity as maximal-ratio receiver combining (MMRC). In this paper transmit diversity scheme using STBC with two and four antennas is applied for the EDGE/EGPRS system and its results are evaluated in a interference-limited scenario. We jointly compare this strategy of multiple antennas with incremental redundancy (IR), a technique for link quality control (LQC) in EDGE.
منابع مشابه
Space-time trellis coding with turbo equalisation for the EGPRS system
Transmit diversity techniques like delay diversity (DD) or space-time trellis coding (STTC) utilise several transmission antennas and thereby protect mobile radio systems against fast fading. The more complex STTC can recover bursts with a few errors, but on the other hand it increases bit errors for bad bursts. Therefore the concatenation of an outer convolutional code and STTC is not superior...
متن کاملDoes Downlink Nulling Make Sense for Combined Packet/circuit Switched Wireless Systems?
Downlink beamforming is the limiting factor in the application of adaptive antennas in cellular mobile communication systems. Directing nulls of the antenna pattern to active mobiles in the downlink will be impractical in the case of packet data transmission. But in the evolution of 2 generation mobile communication systems packet switched data transmission (e.g. GPRS/EGPRS in GSM Phase 2+) and...
متن کاملبررسی کارایی توان کانال تداخلی رله چند ورودی-چند خروجی انبوه
In this paper, power efficiency (PE) of a relay interference channel including multiple transmitter nodes, multiple relay nodes and multiple destination is investigated. It is assumed that the destination and transmitter nodes are equipped with a few number of antennas but the relay nodes have a large number of antennas. Amplify-forward and decode-forward schemes by using MRT/MRC and ZF process...
متن کاملLink Adaptation for Streaming Video in EGPRS Mobile Networks - Vehicular Technology Conference, 2004. VTC 2004-Spring. 2004 IEEE 59th
The poor performance of video compression algorithms in time-varying mobile channels means that the transmission of compressed video over mobile networks is a challenging task. This paper presents a performance enhancement technique for streaming video that makes use of link adaptation. Link adaptation is not generally considered suitable for multi-user streaming video, because it usually requi...
متن کاملPerformance evaluation of indoor wireless systems using BLAST testbed
BLAST[1] has been shown to provide high capacity wireless communications by using multiple antennas at both transmitter and receiver. We have built a narrowband wireless BLAST testbed with multiple transmit and receive antennas. In this paper, we examine the performance of the VBLAST [2, 3] by choosing the antenna configurations and performing link adaptation. It is shown that adapting the numb...
متن کامل