Abstract: One aspect is an electrical junction with wireless controller configured for attachment in a building structure. The junction includes a junction body having surfaces defining an opening. A junction device is coupled to the opening of the junction body and a wireless controller is coupled to the junction body. An external conductor routs voltage from a voltage source in the building structure into the junction body. The wireless controller is electrically coupled between the external conductor and the junction device and is mechanically coupled to the junction body behind a surface of the building structure.

Abstract: One aspect is an electrical junction with wireless controller configured for attachment in a building structure. The junction includes a junction body having surfaces defining an opening. A junction device is coupled to the opening of the junction body and a wireless controller is coupled to the junction body. An external conductor routs voltage from a voltage source in the building structure into the junction body. The wireless controller is electrically coupled between the external conductor and the junction device and is mechanically coupled to the junction body behind a surface of the building structure.

Abstract: MIMO UWB Communications apparatus is configured to send out a channel estimation sequence comprising a plurality of sequentially transmitted symbols in accordance with a first band hopping sequence, sent from one antenna of the apparatus, while another antenna is transmitting another sequence of channel estimation symbols in accordance with another, complementary band hopping sequence. A legacy device will be capable of synchronizing with the channel estimation symbols sent in accordance with the first band hopping sequence, while a MIMO receiver will be able to determine channel estimates for all MIMO channels on the basis of the combined channel estimation transmissions.

Abstract: A concentration system and method is disclosed. An example concentration system includes at least two material tubes configured to receive organic material. The example concentration system also includes a collection tank connected to at least one material tube at a time. The example concentration system also includes a recovery unit connected to the collection tank. The example concentration system also includes a solvent charging tank connected to the recovery unit. Under heat and pressure, an extraction from the organic material in the at least one material tube is removed and the solvent is converted into a gaseous state for collection as a liquid solvent in the solvent charging tank.

Abstract: MIMO UWB Communications apparatus is configured to send out a channel estimation sequence comprising a plurality of sequentially transmitted symbols in accordance with a first band hopping sequence, sent from one antenna of the apparatus, while another antenna is transmitting another sequence of channel estimation symbols in accordance with another, complementary band hopping sequence. A legacy device will be capable of synchronising with the channel estimation symbols sent in accordance with the first band hopping sequence, while a MIMO receiver will be able to determine channel estimates for all MIMO channels on the basis of the combined channel estimation transmissions.

Abstract: An electrical enclosure includes a first part and a second part together forming a body. The body has an inner surface and an outer surface that are separated on opposing surfaces of the body. An outer junction is adjacent the outer surface of the body and an inner junction adjacent the inner surface of the body. Conductive pass-throughs that are at least partially contained within the body electrically couple the inner and outer junctions. An external conductor routing high-voltage from a high-voltage source in the building structure is coupled to the outer junction and mechanically fixed thereto, enclosed by a cover engaging the outer surface sufficiently to provide fire protection and prevent degradation, and such that no portion of the external conductor passes through the body into the inner surface. The second part is removable through the first part thereby providing access to the outer junction through the first part.

Abstract: MIMO UWB Communications apparatus is configured to send out a channel estimation sequence comprising a plurality of sequentially transmitted symbols in accordance with a first band hopping sequence, sent from one antenna of the apparatus, while another antenna is transmitting another sequence of channel estimation symbols in accordance with another, complementary band hopping sequence. A legacy device will be capable of synchronising with the channel estimation symbols sent in accordance with the first band hopping sequence, while a MIMO receiver will be able to determine channel estimates for all MIMO channels on the basis of the combined channel estimation transmissions.

Abstract: MIMO UWB Communications apparatus is configured to send out a channel estimation sequence comprising a plurality of sequentially transmitted symbols in accordance with a first band hopping sequence, sent from one antenna of the apparatus, while another antenna is transmitting another sequence of channel estimation symbols in accordance with another, complementary band hopping sequence. A legacy device will be capable of synchronising with the channel estimation symbols sent in accordance with the first band hopping sequence, while a MIMO receiver will be able to determine channel estimates for all MIMO channels on the basis of the combined channel estimation transmissions.

Abstract: An electrical enclosure includes a first part and a second part together forming a body. The body has an inner surface and an outer surface that are separated on opposing surfaces of the body. An outer junction is adjacent the outer surface of the body and an inner junction adjacent the inner surface of the body. Conductive pass-throughs that are at least partially contained within the body electrically couple the inner and outer junctions. An external conductor routing high-voltage from a high-voltage source in the building structure is coupled to the outer junction and mechanically fixed thereto, enclosed by a cover engaging the outer surface sufficiently to provide fire protection and prevent degradation, and such that no portion of the external conductor passes through the body into the inner surface. The second part is removable through the first part thereby providing access to the outer junction through the first part.

Abstract: A junction device includes a junction device main portion configured for attachment to an electrical enclosure and a modular device portion electrically coupled to the junction device main portion and configured for electrical coupling to an inner junction of the electrical enclosure. At least one conductive pass-through electrically couples the inner junction of the electrical enclosure to an outer junction of the electrical enclosure. The outer junction is enclosed by an outer enclosure that is configured to engage the electrical enclosure thereby surrounding the outer junction to prevent degradation of a coupled external high-voltage conductor and to provide fire protection.

Abstract: The present invention relates to estimating and correcting for frequency offset errors in wireless receivers, and is particularly but not exclusively related to MIMO WLAN applications. The present invention provides an improved method of tracking receiver frequency offsets in a receiver for MIMO systems. These receiver based frequency offset components are caused by errors or inaccuracies in various receiver sub-systems such as phase lock loops or carrier frequency oscillator error, and sampling clock rate errors. The frequency offsets due to each of a number of receiver sub-systems are estimated by monitoring frequency offsets on a number of channels or subcarriers (such as OFDM pilot channels) on different frequencies. These channel frequency offsets are preferably estimated by detecting the phase rotation between adjacent pilot symbols on each respective channel. They are then weighted according to a quality parameter of the estimates, which corresponds to their accuracy.

Abstract: A junction device includes a junction device main portion configured for attachment to an electrical enclosure and a modular device portion electrically coupled to the junction device main portion and configured for electrical coupling to an inner junction of the electrical enclosure. At least one conductive pass-through electrically couples the inner junction of the electrical enclosure to an outer junction of the electrical enclosure. The outer junction is enclosed by an outer enclosure that is configured to engage the electrical enclosure thereby surrounding the outer junction to prevent degradation of a coupled external high-voltage conductor and to provide fire protection.

Abstract: This invention is generally concerned with methods, apparatus and processor control code for decoding a signal received over a MIMO (multiple input-multiple output) channel.

Abstract: The present invention relates to a method of generating a signal for transmission over a channel subject to transmission conditions. A corresponding signal and a method of receiving a signal over a channel subject to transmission conditions are also disclosed. The invention further relates to a transmitter and a receiver.

Abstract: An electrical enclosure includes a body, a face, an outer junction, an inner junction, and a pass-through. The body has an inner surface and an outer surface that are separated without an opening. The outer junction is adjacent the outer surface of the body. The inner junction is adjacent the inner surface of the body. The pass-through is at least partially contained within the body and it electrically couples the inner and outer junctions.

Abstract: MIMO UWB Communications apparatus is configured to send out a channel estimation sequence comprising a plurality of sequentially transmitted symbols in accordance with a first band hopping sequence, sent from one antenna of the apparatus, while another antenna is transmitting another sequence of channel estimation symbols in accordance with another, complementary band hopping sequence. A legacy device will be capable of synchronising with the channel estimation symbols sent in accordance with the first band hopping sequence, while a MIMO receiver will be able to determine channel estimates for all MIMO channels on the basis of the combined channel estimation transmissions.

Abstract: The invention provides a system for implementing a high capacity MIMO system with high throughput which will ensure an eigenmode rich channel largely irrespective of the environment. In conventional MIMO systems, the environment can substantially reduce the theoretically achievable throughput if there is little angular diversity. The system includes a scattering structure for scattering beams emitted by an antenna array to provide good angular diversity at the receiver and hence good throughput in all environments. In addition, the scattering structure is controllable to allow its properties and hence the eigenmodes generated to be varied to maximise the efficiency of the system.

Abstract: An electrical enclosure includes a body, a face, an outer junction, an inner junction, and a pass-through. The body has an inner surface and an outer surface that are separated without an opening. The outer junction is adjacent the outer surface of the body. The inner junction is adjacent the inner surface of the body. The pass-through is at least partially contained within the body and it electrically couples the inner and outer junctions.

Abstract: This invention relates to methods for data transmission in OFDM (Orthogonal Frequency Division Multiplexed) communication systems. More particularly, it relates to data transmission in multi-band OFDM (MB-OFDM) systems. The method of generating an OFDM signal for transmission, comprises the steps of: dividing a plurality of subcarriers into two or more groups of subcarriers, minimising the peak-average power ratio (PAPR) of an OFDM signal, and enhancing the transmission of said OFDM signal by further repeating transmission of said OFDM signal.

Abstract: The invention provides a system for implementing a high capacity MIMO system with high throughput which will ensure an eigenmode rich channel largely irrespective of the environment. In conventional MIMO systems, the environment can substantially reduce the theoretically achievable throughput if there is little angular diversity. The system includes a scattering structure for scattering beams emitted by an antenna array to provide good angular diversity at the receiver and hence good throughput in all environments. In addition, the scattering structure is controllable to allow its properties and hence the eigenmodes generated to be varied to maximise the efficiency of the system.