摘要:
A communication device, comprising: a receiver responsive to a wireless communication signal received from a remote communication device, the receiver being configured to: generate a large matrix codebook based, at least in part, on one or more perceived characteristics of the received wireless communication signal for quantization and communication back to a source of the received signal, the receiver being further configured to: select a suitable small matrix codebook based at least in part on the one or more characteristics of the received signal; and combine the small codebook with one or more additional codewords to generate the large matrix codebook, the one or more additional codewords comprising fine matrix codewords.
摘要:
An access point (AP) in a wireless network communicates with multiple mobile stations (STA1, STA2, STA3) simultaneously using spatial-division multiple access SDMA, using frames that are coordinated to end within a predefined window of time (SIFS).
摘要:
A sub-banded ultra-wideband (SB-UWB) system may combine aspects of an orthogonal frequency division multiplexing (OFDM) modulation scheme with aspects of an ultra-wideband system. In one embodiment, the system may use orthogonal waveforms to form an ultra-wideband wireless communications system. In another embodiment, an FFT based implementation of the system may be used to generate and detect an SB-UWB waveform.
摘要:
A network comprising a base station and multiple mobile devices may use a training phase for the base station to develop parameters that enable spatial division multiple access (SDMA) techniques to be used for communications with the mobile devices, and to subsequently use those parameters in a data phase, thus permitting substantially simultaneous transmissions to, and substantially simultaneous receptions from, the multiple mobile devices on the same frequency.
摘要:
A base station may organize poll groups into groups having similar predicted durations of subsequent responses. In one embodiment predicted durations may be provided by the devices that are to be polled. In another embodiment the predicted durations may be based on past responses from the devices that are to be polled.