Abstract: A method and apparatus for estimating channels in orthogonal frequency division multiplexed (OFDM) communication systems. The method and apparatus allows a channel estimate to be determined independent of having knowledge on channel statistics. Channel estimation is performed by determining and then utilizing a least square (LS) estimate and an interpolation coefficient for each antenna transmitting to the receiver. The interpolation coefficient is determined independently from the statistics of the channel, i.e., without needing the channel multipath power profile (CMPP). The interpolator coefficient is multiplyed by an LS estimate for each transmitting antenna to determine the channel estimate for each channel.

Abstract: A system and a method for providing an interface to and customizing an interactive application for one or more players is provided. The interactive game of the presently preferred embodiment is played in a wireless environment using a mobile station as a user interface with commands entered via a keyboard or via voice. The game is tracked and controlled using a game center and a game server, which is typically at a location remote from the mobile station. Communication between the game server and the mobile station is typically performed using a base station connected to a telecommunications network. The game server executes a software application, which runs a game center. Individual games are managed within the context of this application.

Abstract: This invention applies to a mobile station that is able to determine a required data rate based on data buffer usage. If the data buffer indicates a requirement for a high data rate transmission, the mobile station sends a request to a base station to be assigned multiple parallel code channels. If the multiple parallel code channels are granted, the mobile station uses the channels for transmitting data to the base station until either the data buffer becomes empty, or a base station time-out occurs, or the mobile station is signalled by the base station to reduce its data transmission rate, whichever occurs first. The mobile station of this invention is enabled to autonomously control the data rate during an assigned period for high speed transmission, so as to lower the data rate when needed for the purpose of improving coverage and/or to avoid operating in a power limited condition, thereby degrading link quality.