Spatial Frequency Scheduling for Uplink SC-FDMA based Linearly Precoded LTE Multiuser MIMO Systems Zihuai Lin, Pei Xiao, Troels B. Sørensen, Branka Vucetic Abstract This paper investigates the performance of the 3GPP Long Term Evolution (LTE) uplink Single Carrier (SC) Frequency Division Multiple Access (FDMA) based linearly precoded multiuser Multiple Input Multiple Output (MIMO) systems with ...

Recent Internet traffic measurements show that 60% of the total packets are short packets, which include TCP acknowledgment and control segments. These short packets make a great impact on the performance of TCP. Unfortunately, short packets suffer from large delay due to serving long data packets in switches running in the packet mode, i.e. a packet is switched in its entirety. To optimize TCP...

This paper addresses the design of packet transmission schedules in photonic slotted wavelength-division multiplexing/time-division multiplexing broadcast-and-select networks with wavelengths and nodes. Nodes are equipped with one tunable-wavelength transmitter with nonnegligible tuning times and one fixed-wavelength receiver. A new scheduling algorithm that exploits multihop packet transfer to...

This paper combines spatial Tomlinson-Harashima (TH) precoding with packet scheduling at the transmitter to improve the system-level performance of packet data systems. Under the assumptions of instantaneous and perfect channel state information (CSI) at the transmitter and independent and identically distributed (i.i.d.) user channels with flat fading, the spatially equalized and decoupled mul...

In this paper, a multiple-input-multiple-output (MIMO) hybrid-automatic repeat request (HARQ) algorithm based on antenna scheduling is proposed. It retransmits the packet using the scheduled antennas according to the state of the communication link, instead of retransmitting the packet through the same antennas. The proposed MIMO-OFDM HARQ system based on antenna scheduling is shown to be super...

This paper proposes a cross-layer packet scheduling scheme for QoS support in audio-video transmission with IEEE 802.11e HCCA and assesses application-level QoS and QoE of the scheduling scheme under lossy channel conditions. In the proposed scheme, the access point (AP) basically allocates transmission opportunity (TXOP) for each station in a service interval (SI) like the reference scheduler ...

In multi-service packet networks the packet scheduling algorithm plays a key role in delivering guaranteed service to different flows. In this article we evaluate surplus round robin (SRR) scheduling algorithm. We apply the Latency-Rate (LR) servers theory in order to obtain bounds on the latency and delay provided by the algorithm. We compare the performance characteristics of SRR with the pop...

A high-performance variable-length packet scheduling algorithm is proposed for efficiently accommodating IP traffic in inputqueued crossbar switches. It uses a rotating priority(round-robin) arbitration and a masking operation for variable-length packets. This algorithm achieves 100% throughput with a single iteration for uniform IP traffic and performs better packet latency and similar cell la...

We consider scheduling data tra c for the downlink of a wireless network A draining problem is formulated where the goal is to transmit a given set of packets Each packet is assigned a utility that depends on the delay incurred We propose a simple gradient based scheduling rule which attempts to maximize the average utility per packet A deterministic analysis of this rule is given by considerin...

In this paper, the video streaming is proposed for multiple clients network. The scalable video is delivered from server to multiple clients over different access networks, aimed to reduce the distortion of received videos. The video present in database of server. The video characteristic is captured in this paper. Integer programming is proposed for the deterministic packet scheduling. It is v...