Industrial Technology Research Institute

Mediatek Corporation

Ming-Fu Tang

Bor-Ching Su

Yen-Liang Chen

Jia-Yu Liu

Szu-Yu Wang

Ming-Hsuan Kao

Jian-Yu Chu

A transmitter and a method for dynamically setting a current mode of the transmitter are provided. The transmitter includes a digital signal processing (DSP) circuit and a radio frequency (RF) circuit. The DSP circuit is configured to determine a target current mode by selecting one of multiple candidate current modes of the transmitter according to instantaneous transmitting (TX) information, wherein the instantaneous TX information includes at least one of a resource block (RB) information, a modulation and coding scheme (MCS), and an orthogonal frequency-division multiplexing (OFDM) type of an instantaneous TX signal. The RF circuit is configured to output the instantaneous TX signal, wherein at least one supply voltage and at least one bias voltage of a power amplifier (PA) of the RF circuit is controlled according to the target current mode. More particularly, the multiple candidate current modes correspond to different target power consumptions of the transmitter, respectively.

Transmitter and method for dynamically setting current mode of transmitter

In one exemplary embodiment, a wireless communication apparatus transmitting data by using several sub-carriers. The wireless communication apparatus comprises a signal modulator, a signal processor, a storage, a computing processor, and a transmitter. The signal modulator generates a modulated signal in time domain based on the data. The signal processor performs signal processing on the modulated signal, and comprises a window module and a filter module. The window module performs windowing operation on the modulated signal to generate a window-operated signal. The filter module performs filtering operation on the window-operated signal to generate a transmitting signal in time domain. The computing processor performs operations of setting up the window module and the filter module according to a window characteristic function and a filter characteristic function. The transmitter transmits the transmitting signal.

Wireless communication apparatus and the method thereof

A method of performing uplink channel estimation and a base station using the same are provided. The method is applicable to serve at least two UE equipments (UEs) in a communication system. The at least two UEs are located in at least two beam sectors respectively. The base station comprises a plurality of antennas. The method includes: determining whether multipath of the at least two UEs passing through a same beam sector; assigning a first and a second training sequence for a first UE and a second UE of the at least two UEs respectively; receiving a reference signal, wherein the reference signal is transmitted by the first UE and the second UE according to the first and the second training sequence; and performing channel estimation for the first UE and the second UE according to the reference signal, the first and the second training sequence.

Method of performing uplink channel estimation and base station using the same

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Hsinchu, Taiwan

Ming-Fu Tang