downlink transmission
Space Time Chip Equalization for Maximum Diversity Space Time Block Coded DS CDMA Downlink Transmission
... DS-CDMA downlink scheme, resulting into the so-called space-time block coded DS-CDMA down- link ...DS-CDMA downlink transmission schemes can be ...DS-CDMA downlink schemes that have been ...
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CDMA Downlink Transmission with Transmit Antenna Arrays and Power Control in Multipath Fading Channels
... For downlink transmission, power control is also important for energy conservation and interference ...above downlink transmission array processing together with power control, we execute it ...
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Multichannel simultaneous uplink and downlink transmission scheme for flexible duplexing
... As one of our goals is to guarantee backward compatibil- ity (so there would be no need to modify existing legacy hardware, i.e., MT devices), it is also worth analyzing the impact of radio access network on the ...
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Lte Downlink Transmission Scheme
... called downlink (from tower to ...LTE downlink . To fulfill all the requirements LTE uses a transmission scheme called orthogonal frequency division multiplexing (OFDM) for the downlink ...the ...
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Performance analysis of cooperative cognitive MIMO multiuser downlink transmission with perfect and imperfect CSI over Rayleigh fading channels
... CC-MIMO multiuser downlink transmission systems with and without perfect CSI. Based on these deriva- tions, in this section, the simulations and numerical re- sults are presented, which is used to validate ...
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MMSE precoding for multiuser MISO downlink transmission with non homogeneous user SNR conditions
... Another approach to find the optimal transmit beam- forming vectors is to directly solve the non-convex sum- rate problem [5,9]. In particular, the work in [9] proposed an iterative algorithm based on the ...
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Multiuser MIMO downlink transmission with BEM based limited feedback over doubly selective channels
... Besides the well-known time, frequency and code divi- sions in wireless communications, spatial separation has been recently recognized as a new signal dimension for further system performance enhancement, especially in ...
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Thoughput Performance of Adaptive Modulation and Coding Scheme with Link Adaptation for Mimo-Wimax Downlink Transmission
... The mobile WiMAX system is based on the IEEE 802.16m standard which is used to develop an advanced air interface (AAI) to meet the requirements for IMT-Advanced next generation networks , which are able to provide high ...
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Burst allocation method to enable decision directed channel estimation for mobile WiMAX downlink transmission
... both downlink (DL) and uplink (UL) transmissions of WiMAX use OFDMA, these two systems have different design considerations and different pilot patterns, and thus, they have to use different channel estimation ...
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High Capacity Downlink Transmission with MIMO Interference Subspace Rejection in Multicellular CDMA Networks
... We proposed recently a new technique for multiuser detection in CDMA networks, denoted by interference subspace rejection (ISR), and evaluated its performance on the uplink. This paper extends its application to the ...
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Multicell Downlink Capacity with Coordinated Processing
... for uniform asymmetry case motivates our algorithm design for the fading scenario. We have obtained the analytical sum rate expressions for several cooperative downlink transmission schemes: intra-cell ...
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On the application of quasi degradation to MISO NOMA downlink
... practical downlink transmission schemes, the information theoretic counterpart of downlink, termed as broadcast channel, has been investigated extensively during the last three ...practical ...
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A general MIMO framework for NOMA downlink and uplink transmission based on signal alignment
... MIMO-NOMA downlink transmission, in which each user has a single antenna and the base station has multiple antennas, has been investigated in [12] and ...
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Downlink Scheduling for Multiclass Traffic in LTE
... 5.2. Physical Layer Modeling. System simulations are con- ducted over a large number of cells/sectors and large number of users. As such, characterizing the channel, the physical layer waveform and/or exact decoding ...
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Energy efficient transmission strategies for CoMP downlink—overview, extension, and numerical comparison
... The data needs to be encoded and modulated at the trans- mitter as well as demodulated and decoded at the receiver. Conventionally, the amount of power for these functional- ities is assumed to be fixed [5, 8, 9, 16, ...
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An Improved Overloading Scheme for Downlink CDMA
... An improved overloading scheme is presented for single-user detection in the downlink of multiple-access systems based on OCDMA/OCDMA (O/O). By displacing in time the orthogonal signatures of the two user sets ...
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Spectrum Allocation for Downlink 4G Networks
... the available spectrum to increase the number of admitted calls with adaptive QoS, avoid starvation in BE traffic, adaptive CAC scheme is use different traffic loads [r] ...
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A joint adaptive MMSE downlink receiver
... Channelisation codes 1 to 3 are applied to spread the spectrum of tbe data The spread spectrum signal is organised in data bursts of type 1 and transmitted through a baseband equivalent [r] ...
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Scheduling Algorithms Implementation for LTE Downlink
... in packet data services. RR runs the scheduling in a fixed cycle. All active users are identified by their ID. Each user is allocated an equal and fixed number of time slot(s) in a ring fashion. Transmission ...
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Downlink beamforming concepts in UTRA FDD
... and are displayed in Fig. 1. For beam assignment of the mo- biles uplink measurements are evaluated, i.e. the beam with highest power in the uplink is used for downlink transmis- sion, compare Technical Report ...
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