Abstract: The present invention is related to a circuit for encoding at least two input symbols by means of a space-time block code, comprising a plurality of multiplexers, each arranged to receive the input symbols and to output a selected symbol, storing means for storing information on which input symbol is to be selected in each multiplexer of the plurality of multiplexers and for storing gain factor information to multiply the multiplexer outputs with, calculation means, coupled with the storing means, for determining an encoded version of the input symbols based on the multiplexer outputs and corresponding gain factors stored in the storing means. The invention further discloses a corresponding circuit for space-time block decoding.

Abstract: The present invention is related to a circuit for encoding at least two input symbols by means of a space-time block code, comprising a plurality of multiplexers, each arranged to receive the input symbols and to output a selected symbol, storing means for storing information on which input symbol is to be selected in each multiplexer of the plurality of multiplexers and for storing gain factor information to multiply the multiplexer outputs with, calculation means, coupled with the storing means, for determining an encoded version of the input symbols based on the multiplexer outputs and corresponding gain factors stored in the storing means. The invention further discloses a corresponding circuit for space-time block decoding.

Abstract: A method for tracking and compensating phase noise in an OFDM communication system, includes: applying to the OFDM communication system a signal comprising a set of pilot tones, each pilot tone comprising a pilot symbol, prerotating the signal applied to the OFDM communication system, constructing for each pilot tone a reference value for the pilot symbol on that pilot tone, said reference value taking into account the distortion the signal has undergone, correlating for each pilot tone comprised in the prerotated signal the reference value with the pilot symbol, yielding a phase offset value for that pilot tone, averaging the various phase offset values of the pilot tones to yield an averaged offset value, indicative of the phase noise, rotating the received symbol according to the averaged offset value, such that the phase noise is compensated for.

Abstract: A method of providing an automatic gain control (AGC) in a receiver structure includes multiplying a received analogue signal with a predetermined gain setting to obtain an amplifier output signal, sampling the amplifier output signal, estimating the energy in the samples, calculating the average energy, computing the percentage of clipped samples, calculating the target energy value based on the average energy and the percentage of clipped samples and the gain setting, and applying the update receiver gain setting.

Abstract: The present invention is related to a method to provide an automatic gain control (AGC) in a receiver structure, comprising the following steps: multiplying a received analogue signal with a predetermined gain setting to obtain an amplifier output signal, sampling the amplifier output signal, estimating the energy in the samples, calculating the average energy, and the further steps of computing the percentage of clipped samples, calculating the target energy value based on the average energy and the percentage of clipped samples and the gain setting, and applying the updated receiver gain setting.