ArrayComm delivers differentiating performance for LTE and LTE-A base stations, from small- to large-cell solutions. ArrayComm has leveraged its extensive real-world baseband software experience across a range of air interfaces, including LTE, LTE-A, PHS, and 802.20 (iBurst) wireless systems to develop powerful performance-enhancing features, yielding best-in-class broadband wireless performance. A-MAS modules can be quickly integrated into most base station architectures for rapid time to market and cost-effective performance.
Infrastructure Products Overview
Downlink Beamforming – ArrayComm’s dynamically adaptive beamforming module is superior to simpler approaches such as beam switching or steering. Base station antenna signals are precisely weighted to optimize the combined signal-to-noise ratio at the target subscriber device. ArrayComm’s beamforming can be combined with adaptive interference cancellation (AIC) and MIMO transmission for additional performance gains. Average gains range from 6 to 8 dB, with peak gains far above that.
Uplink Adaptive Interference Cancellation (AIC) Receivers – The ability to counteract undesired signals is a key benefit provided by ArrayComm. Dominant interfering signals are identified and “nulled” to produce a higher signal-to-interference-plus-noise ratio in the base station receive path. ArrayComm’s AIC can be combined with MIMO reception for additional performance gain. This A-MAS feature can enable overall link gains of 6 to 10 dB.
Advanced Control Channel Receivers – ArrayComm’s extensive baseband software expertise enables us to provide a range of optimized (linear and non-linear) control receiver designs that are fine tuned for best-in-class performance. These include multi-antenna combining and message detectors.
RF Calibration – For downlink beamforming using uplink training on TDD networks, ArrayComm’s baseband software can “calibrate” the base station electronics between the baseband PHY and the antennas for better performance. The uplink and/or downlink antenna signals are precisely weighted to create a “reciprocal” channel having a figure of merit (downlink pointing gain over nulling gain) of 30 dB or more.
These advanced 4G software modules are commercially available today. Contact us to see how ArrayComm can keep your wireless broadband base station designs on the leading edge of performance.
A-MAS for 4G User Equipment
The smartphone revolution has established the mandate for ubiquitous,
high-speed data in wireless networks. ArrayComm can deliver a superior user experience – while minimizing network loading – by employing efficient baseband processing software within the client device. Using ArrayComm’s industry-leading adaptive interference cancelation software, bandwidth consumption by data-hungry smartphones can be decreased by up to 50%, while increasing user throughput.
Virtually all LTE and LTE-A mobiles and CPEs
have two receive antennas, which can also be used to support powerful, performance-enhancing Adaptive Interference Cancelation (AIC). The AIC algorithm cancels out the most dominant interferer (from another base station), producing remarkable performance gains. Field trials have averaged 50%–100% downlink throughput gains in cell edge conditions. CPEs with more than two receive antennas can achieve higher gains. As 4G networks inevitably evolve to N=1 frequency reuse patterns to maximize capacity, user equipment will be challenged to perform in higher interference environments an increasing proportion of the time. AIC will play a key role in optimizing the user experience while network operators optimize spectrum efficiency.
ArrayComm’s AIC algorithm for user equipment is fully developed and tested in the field. This technology works equally well in FDD and TDD spectrum and delivers superior performance in both CDMA and OFDMA networks. Contact us to discuss how ArrayComm can apply this technology to help differentiate your device or chipset platform.