Transmission power control for downlinks in CDMA/shared-TDD cellular packet systems
نویسندگان
چکیده
|This paper proposes a transmission power control scheme for downlinks in CDMA/shared{TDD cellular packet systems that experience inter-cell interference between uplinks and downlinks. The proposed scheme increases the downlink transmission power for re-transmission packets and thus improves the signalto-interference ratio for the packets. Simulation results show that the proposed scheme improves downlink throughput without sacri cing the uplink through-
منابع مشابه
Asymmetric Radio Resource Assignment Scheme for Connection-less Services in CDMA/Shared-TDD Cellular Packet Communications
The shared time division multiplexing (shared-TDD) scheme has been proposed to accommodate asymmetric communications between uplink and downlink. The accommodation of connection-less services in Shared-TDD systems causes a difficulty of TDD boundary control. This paper proposes a TDD boundary control (resource assignment) scheme, which can optimize a position of the TDD boundary based on the ra...
متن کاملA New Medium Access Control Protocol for TDD Mode Wideband CDMA Wireless Local Area Networks
It is well known that TDD mode wideband CDMA is particularly suited for wireless local area networks (LANs). In this paper a medium access control (MAC) protocol is proposed for wireless multimedia LANs that are based on TDD mode wideband CDMA. In order to minimize interference experienced by a packet and to satisfy bit error rates (BERs) of multimedia traffic, a minimum-power allocation algori...
متن کاملOptimal resource management in packet-switching TDD CDMA systems
wireless personal communications systems are expected to provide a broad range of multimedia services including voice, data, and video to mobile users with guaranteed quality of service (QoS).Wide-band code-division multiple access (CDMA) has been proposed as the multiple access technique for third-generation wireless communications systems, as specified in the International Mobile Telecommunic...
متن کاملCDMA cellular downlink transmission with transmit arrays and power control: circuit-switched and packet-switched systems
Wireless CDMA cellular downlink communications with transmit antenna arrays in multipath fading channels is studied. Transmit diversity and various beamforming techniques are investigated and compared, in conjunction with power control. No instantaneous downlink channel information is assumed; however, the obtained results are also compared with results assuming ideal feedback. The study is car...
متن کاملApplication of Random Transmit Power Control to DS-CDMA/TDD Packet Mobile Radio
A random transmit power control (TPC) is applied to DSCDMA/TDD packet mobile radio, which controls the transmit power so as to intentionally vary the received signal power in order to obtain the large capture effect. The uplink capacity with the random TPC in a frequencyselective fading channel is evaluated by computer simulation. The simulation results show that the random TPC provides larger ...
متن کامل